PLEASE HELP!!!!!!!!!

There is a possibility of using radiometric dating methods on a meteorite made of sedimentary rocks but is is usually  not  effective in determining its age compared to igneous or metamorphic rocks.

Radiometric dating, radioactive dating or radioisotope dating is described as  a technique which is used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.

In conclusion, Radiometric dating rely on the presence of radioactive isotopes that decay over time.

Learn more about Radiometric dating at:

https://brainly.com/question/8831242

#SPJ1

Mountain lions, panthers, pumas, and cougars are all names for the same species: Puma concolor. Scientists have been able to determine that these animals are the same species by comparing and noting the similarities between them.

For example, all of these animals have a tawny coloration and a characteristic black tip on their tails, as well as similar physical features, such as a muscular body, long tail, and a round head. Additionally, they all inhabit similar geographic ranges and share the same dietary habits.

Furthermore, the genetic data collected from these animals has revealed that they are all closely related and possess the same DNA structure. This data has allowed scientists to correctly classify this species and finally settle the debate of whether these animals are one and the same.

Know more about species here

https://brainly.com/question/13259455#

#SPJ11

complete question is :

The animals known as a mountain lion, panther, puma, and cougar are actually the same animal, puma concolor. because of their large range, the animal has acquired different names around the globe. scientists most likely determined that these organisms are the same species by comparing and noting the similarities between them. explain.

Answer in pic below ^^

Mosquitoes acquire pathogens from infected hosts through blood meals, while flies acquire pathogens from contaminated surfaces and can transmit them through direct contact or regurgitation.

To disrupt the transmission of pathogens by mosquitoes, several strategies can be employed, including the use of insecticides to kill adult mosquitoes or larvicides to prevent the development of mosquito larvae in water sources.

Mosquito nets can also be used to physically block mosquitoes from accessing humans, and vaccination of humans or animals can provide immunity against certain mosquito-borne diseases.

In the case of fly-borne pathogens, sanitation measures such as proper waste disposal and cleaning can reduce the availability of contaminated surfaces. Additionally, using physical barriers such as screens or protective clothing can prevent direct contact between flies and hosts.

Educating individuals on proper hygiene practices, such as hand washing and food preparation, can also reduce the spread of fly-borne illnesses.

To know more about pathogens, refer here:

https://brainly.com/question/30654336#

#SPJ11

A decrease in ATP synthesis within the cells of the proximal convoluted tubule would result in a significant decrease in the reabsorption of ions and nutrients.

The proximal convoluted tubule is an important part of the nephron in the kidney, responsible for the reabsorption of ions, nutrients, and water from the filtrate. This process requires the active transport of these substances across the cell membrane and into the bloodstream, which is facilitated by the energy provided by ATP.

If there is a decrease in ATP synthesis, the cells in the proximal convoluted tubule will have less energy to carry out the active transport process, resulting in a decrease in the reabsorption of ions and nutrients. This can lead to a decrease in overall kidney function and the accumulation of waste products in the body.

To know more about the ATP synthesis refer here :

https://brainly.com/question/29744524?#

#SPJ11

When lemming populations decrease, you can expect the following impacts on Arctic foxes: Decreased food availability,  Increased competition, Potential starvation, Changes in behavior and Decrease in Arctic fox population.

1. Decreased food availability: With fewer lemmings, Arctic foxes may struggle to find enough food to sustain themselves.
2. Increased competition: Arctic foxes may compete more intensely with each other and other predators for the limited lemming supply.
3. Potential starvation: Some Arctic foxes may not find enough lemmings to eat, leading to malnutrition or even death.
4. Changes in behavior: In response to the decrease in lemming populations, Arctic foxes may alter their hunting strategies or search for alternative food sources.
5. Decrease in Arctic fox population: Over time, the decline in lemmings could lead to a reduction in the overall Arctic fox population in the area, as a result of lower reproductive success and survival rates.

For more such questions on competition, click on:

https://brainly.com/question/14328173

#SPJ11

The best description for the energy change occurring with the reaction inside the beaker is: endothermic because heat is being absorbed from the surroundings. Option D

An endothermic reaction is a type of reaction where heat energy is absorbd from its surroundings.

For the experiment, two solid chemical compounds were mixed together in the beaker, the reaction reqquired heat energy to proceed. As a result, the reaction absorbs heat from its surroundings, which includes the beaker and the surrounding air.

When heat is absorbed it then r causes the temperature of the beaker to drop.

Find more exercises on endothermic reaction;

https://brainly.com/question/10373907

#SPJ1

The types of adaptations of desert plants that enable them to survive and reproduce are stem and leaf adaptations and root adaptations

By changing throughout time in response to external forces, organisms can better survive and reproduce in their particular habitat. This process is known as adaptation. Morphological, physiological, and behavioral adaptations can all be the result of natural selection, genetic drift, or other processes.

The biological process of reproduction is how organisms create children that receive their genetic make-up. Most species reproduce by joining their male and female gametes to create a zygote, which then grows into a new person. The continuation of a species and the transmission of genetic features from one generation to the next depend on reproduction. Reproduction can take place in a sexual or asexual way.

Learn more on adaptation here https://brainly.com/question/1213023

#SPJ1

Answer: D. Eat more rabbits and squirrels

Explanation: If the mouse population disappeared from the ecosystem, the fox would most likely eat more rabbits and squirrels.

The alternative pathway in C4 plants involves several important characteristics that allow for efficient photosynthesis in arid environments. The correct option are B) very hot, dry habitats, C) sunny, tropical habitats , D) occurs in sugarcane and corn. G) fixes carbon dioxide into four-carbon molecules H) fixes carbon dioxide into organic molecules at night and J) allows for sufficient carbon dioxide uptake and minimizes water loss.

First, C4 plants are commonly found in plants such as cacti, jade plants, and pineapples that are adapted to dry conditions. Secondly, the pathway involves fixing carbon dioxide into organic molecules at night, which is known as crassulacean acid metabolism (CAM). This allows for plants to minimize water loss during the day by keeping their stomata closed and still be able to fix carbon dioxide for photosynthesis.

The alternative pathway in C4 plants also allows for sufficient carbon dioxide uptake. This is due to the presence of specialized mesophyll cells that have high levels of the enzyme PEP carboxylase, which can capture carbon dioxide even when levels are low. The captured carbon dioxide is then transported to the bundle sheath cells, where it is further processed through the Calvin cycle. This process allows for efficient use of carbon dioxide and minimal water loss through transpiration.

Overall, the alternative pathway in C4 plants is an important adaptation that allows for efficient photosynthesis in arid environments. It involves several important characteristics, including fixing carbon dioxide into organic molecules at night, specialized mesophyll cells, and efficient use of carbon dioxide. These adaptations help plants to survive and thrive in harsh, dry environments.

To know more about C4 plants click here:

https://brainly.com/question/31012426

#SPJ11

The fossil record provides evidence for the idea of natural selection by showcasing the changes in species over time. It reveals the existence of transitional fossils, which are intermediate forms between ancestral species and their descendants. This demonstrates how species adapt to their environment through the process of natural selection, leading to the development of new traits and the eventual evolution of new species.

Learn more about natural selection:

https://brainly.com/question/23929271

#SPJ11

Carbohydrates are one of the four types of biological macromolecules, and one of their representative polymers is glycogen. Glycogen is a large, branched polymer made up of glucose monomers linked together by α1-4 glycosidic bonds and α1-6 glycosidic bonds.

Glycogen is primarily found in animal cells and serves as a storage molecule for glucose, providing a readily available source of energy for the cell. The branching structure of glycogen allows for quick and efficient access to glucose when it is needed by the cell.

Lipids are another type of macromolecule, and one representative polymer is triglycerides. Triglycerides are made up of three fatty acid molecules linked to a glycerol molecule by ester bonds. The fatty acid molecules vary in length and degree of saturation, giving triglycerides a wide range of physical properties. Triglycerides serve as a storage molecule for energy and are found in adipose tissue. They also serve as a structural component of cell membranes and play a role in cell signaling.

Proteins are a third type of macromolecule, and one representative polymer is hemoglobin. Hemoglobin is a complex protein made up of four subunits, each of which contains a heme group. Hemoglobin is responsible for transporting oxygen from the lungs to the tissues and carbon dioxide from the tissues to the lungs. The subunits of hemoglobin are linked together by various types of chemical bonds, including hydrogen bonds, disulfide bonds, and hydrophobic interactions.

Nucleic acids are the final type of macromolecule, and one representative polymer is DNA. DNA is made up of nucleotides, which consist of a nitrogenous base, a sugar molecule, and a phosphate group. The nitrogenous bases are adenine, thymine, guanine, and cytosine, and they are linked together by hydrogen bonds to form the rungs of the DNA ladder. The sugar molecules and phosphate groups make up the sides of the ladder, linked together by phosphodiester bonds. DNA serves as the genetic material of the cell, carrying the instructions for the synthesis of proteins and other molecules necessary for cell function.

Overall, the monomer subunits and manner of linkage of each representative polymer are characteristic of the class of macromolecules to which it belongs. Carbohydrates are made up of monosaccharides linked by glycosidic bonds, lipids are made up of fatty acids linked to a glycerol molecule by ester bonds, proteins are made up of amino acids linked by peptide bonds, and nucleic acids are made up of nucleotides linked by phosphodiester bonds. These characteristics allow each class of macromolecules to perform their unique functions within the cell.

To know more about Carbohydrates click here:

https://brainly.com/question/14614055

#SPJ11

The fact that sickled red blood cells carry less oxygen than normal red blood cells demonstrates that the mutations in the DNA that codes for hemoglobin can change the structure and function of hemoglobin.

The correct option is D.

Hemoglobin is a protein that is found in red blood cells that carries oxygen from the blood to cells and tissues where they are needed.

The function of hemoglobin is related directly to its structure.

A mutation in the gene that codes for hemoglobin will result in adefor ation of the structure of hemoglobin, us rendering it unable to transport oxygen effieciently.

Learn more about hemoglobin at: https://brainly.com/question/24172325

#SPJ1

Answer:

Explanation:

This is an example of a mechanical barrier. The orchid has evolved a specific petal shape that holds nectar to attract only certain pollinators with a long proboscis, such as the sphynx moths. The honey bee, on the other hand, cannot reach the nectar due to its lack of a long proboscis. This mechanical barrier ensures that only specific pollinators can access the nectar and transfer pollen between flowers of the same species.

Orchids evolving an elongated petal that holds nectar to attract specific pollinators, such as sphinx moths with a long proboscis, while discouraging others, such as honey bees is an example of a physical barrier.

In this scenario, the physical characteristic of the elongated petal and the position of the nectar acts as a physical barrier to prevent honey bees from accessing the nectar.

The petal is elongated and the nectar is placed deep inside, which can only be reached by pollinators like sphinx moths with a long proboscis. Honey bees, which have a short proboscis, are unable to reach the nectar, thus creating a physical barrier.

This is an example of a natural selection process where the orchids have evolved a specific feature to attract only specific pollinators, which in turn increases the likelihood of successful pollination.

To know more about orchids, refer here:

https://brainly.com/question/7480923#

#SPJ11

The Population Dynamics Lab Report is a document that needs to be completed while completing the Population Dynamics Virtual Lab Activity. The lab report should contain the appropriate information and data that is collected during the virtual lab activity.

Title: Population Dynamics Lab Report
Objective(s): To understand the factors that affect the population dynamics of seals and whales.
Hypotheses: The population of seals and whales will be affected by factors such as predation, carrying capacity, growth rate, capture efficiency, and death rate.
Variables: Independent variables include predation, carrying capacity, growth rate, capture efficiency, and death rate. Dependent variables include the population of seals and whales.

Materials:
1. The Population Dynamics Virtual Lab Activity
2. Population Dynamics Lab Report

Procedures: The procedures for the virtual lab activity are listed in the Population Dynamics Virtual Lab Activity.

Data and Observations:

Table 1: Predation and Carrying Capacity Trial

Starting Seal population Starting Whale population Highest Seal Population Highest Whale Population
1 25 25
2 25
3 25

Table 2: Growth Rate and Capture Efficiency Trial

Seal birth rate Whale birth rate Highest Seal Population Highest Whale Population
1 0.05 0.005
2 0.005

Table 3: Death Rate and Capture Efficiency Trial

Whale death rate Whale capture efficiency Highest Seal Population Highest Whale Population
1 0.05 0.005
2 0.005

Conclusion:
After completing the virtual lab activity, the following reflection questions should be answered as a summary in the conclusion of the lab report:

• Were your hypotheses correct or incorrect? Why or why not?
The hypotheses were correct in that the population of seals and whales were affected by factors such as predation, carrying capacity, growth rate, capture efficiency, and death rate.

• Using Table 1, which of the three trials produced the highest population for both the whales and the seals? Why do you think this trial had the best outcome for the whale and seal populations?
Trial 2 produced the highest population for both the whales and the seals. This trial had the best outcome because it had the right balance between predation and carrying capacity.

• Using Table 2 and 3, explain how the birth rates of the seals and the death rates of the whales affected the population for both whales and seals.
The birth rates of the seals and whales directly affected the population growth of both species. The higher the birth rate, the higher the population growth. The death rates of the whales also had a direct impact on the population growth of both species. The higher the death rate, the lower the population growth.

To know more about document click here:

https://brainly.com/question/12401517

#SPJ11

Yes, that is correct. The sedimentary layer of earth with high amounts of the element iridium that was discovered by scientists was laid down about the time at which the dinosaurs went extinct. Iridium is rare in Earth’s rocks, but it is commonly found in meteorites. Scientists suggested that a large meteor impact caused a layer of dust to envelope Earth, which may have resulted in the extinction of the dinosaurs. This event is known as the Cretaceous-Paleogene (K-Pg) extinction event, which occurred about 66 million years ago.

A DNA fingerprint uses specific regions of the DNA that vary between individuals, such as short tandem repeats (STRs), to differentiate between two people.

DNA fingerprinting, also known as DNA profiling, is a technique that analyzes specific regions of an individual's DNA to create a unique profile. Although humans share a high percentage of DNA with one another, there are still differences in the genetic sequences within certain regions of the genome. These differences, known as polymorphisms, are the basis for DNA fingerprinting. By analyzing these polymorphisms, forensic scientists can differentiate between individuals and exclude others who do not share the same DNA profile.

There are several types of polymorphisms that can be used in DNA fingerprinting, including short tandem repeats (STRs) and single nucleotide polymorphisms (SNPs). STRs are repeating sequences of DNA that vary in length between individuals. SNP's are single nucleotide variations in the genetic code that can be used to identify specific genetic markers. The combination of these polymorphisms provides a unique genetic profile for each individual, which can be used for identification purposes.

Overall, DNA fingerprinting is a highly accurate method for identifying individuals, as the probability of two unrelated individuals sharing the same DNA profile is extremely low. Despite the high percentage of shared DNA among humans, the small differences in genetic sequence are enough to create a distinct genetic profile for each individual.

To know more about fingerprint click here:

https://brainly.com/question/15221897

#SPJ11

A. A bird builds its nest in the ash near a volcano.

hope this helps!

-mia s.

To create a cladogram with the organisms provided (sponge, flatworm, snail, ant, frog, lizard, hamster, pigeon, and bacteria), following steps are to be followed:

1. List shared characteristics: Determine the common traits or features of the organisms.

2. Organize the organisms by characteristics: Group organisms based on their shared features, starting with the most basic traits and moving towards more specific ones.

3. Create a branching diagram: Start with the most basic group (in this case, bacteria) and add branches for each new shared characteristic. The branching points, or nodes, represent a common ancestor with that trait.

Here's a possible cladogram for these organisms:

     /--Pigeon
    /  
 /--|--Hamster
/     \
/--|--|--Lizard
|     \
|      \--Frog
|
|--Ant
|
|--Snail
|
|--Flatworm
|
|--Sponge
|
\--Bacteria

The cladogram starts with bacteria, then branches into more complex organisms like sponges and flatworms, followed by snails, ants, and finally vertebrates (frogs, lizards, hamsters, and pigeons).

Each branching point represents a shared characteristic among the organisms in that group.

To learn more about bacteria, refer below:

https://brainly.com/question/8008968

#SPJ11

Active volcanoes are located primarily along tectonic plate boundaries, such as the "Ring of Fire" in all of the Pacific Ocean.

Earthquakes are most prevailing along plate barriers as well, containing transform boundaries, differing boundaries, and converging boundaries.

There are three main tiers of the Earth that you can see: the coating, the mantle, and the core. The four main types of confines are divergent, converging, transform, and plate perimeter zones.

The plates in a transform barrier slide past each other in opposite guidance. Transform boundaries maybe found near the San Andreas Fault in California, USA. In a collision district, the plates move towards each other and collide, making uplift and pile building.

Learn more about Earthquakes  from

https://brainly.com/question/248561

#SPJ1

Answer:

One early idea about heredity that was shown to be false by Frederick Griffith's research  was the concept of "blending inheritance." This idea suggested that the traits of offspring were a mixture of the traits of their parents.

Griffith's experiments with Streptococcus pneumoniae in the 1920s showed that this was not the case. He discovered that some strains of the bacteria were virulent, while others were non-virulent. When he injected mice with the non-virulent strain, they remained healthy. However, when he injected mice with the virulent strain, they became sick and died.

Griffith then made a surprising discovery: when he injected mice with a mixture of the non-virulent and virulent strains, the mice became sick and died, and the virulent strain could be recovered from their bodies. This suggested that something from the virulent strain had been transferred to the non-virulent strain, making it virulent as well.

This transformation was later shown to be due to the transfer of genetic material from the virulent strain to the non-virulent strain. This discovery challenged the concept of blending inheritance, showing that genetic information could be transferred intact between organisms. This paved the way for the discovery of DNA as the molecule responsible for transmitting genetic information.

Explanation:

The temperature of a melting ice cube stays the same because the energy being supplied is used to break the bonds holding the solid together rather than increasing the temperature of the solid.

When a solid, such as an ice cube, is heated, its temperature increases until it reaches its melting point. At this point, the heat energy being supplied to the ice cube is used to break the intermolecular bonds holding the solid together rather than increasing the temperature. This process is called melting and requires a significant amount of energy.

During the melting process, the temperature of the ice cube remains constant because the energy being supplied to the cube is being used to break the bonds between the molecules, rather than increasing their kinetic energy, which would raise the temperature. This phenomenon is known as the heat of fusion.

Once all the bonds have been broken and the ice has melted, any additional energy supplied to the water will increase its temperature according to the specific heat capacity of water.

In summary, the temperature of a melting ice cube stays the same because the energy being supplied is used to break the bonds holding the solid together rather than increasing the temperature of the solid.

To know more about melting click here:

https://brainly.com/question/15873508

#SPJ11

Compartmentalization provides evolutionary advantages by allowing for greater specialization, efficiency, and regulation within biological organisms.

Compartmentalization is the process of dividing a larger space or structure into smaller, distinct compartments or sections. This process is commonly found in biological organisms and plays an important role in their evolution. The primary advantage of compartmentalization is that it allows for greater efficiency and specialization within a larger structure.

In biological organisms, compartmentalization can be seen in the form of different organs, tissues, and cells, each with their own specific functions. For example, the human body has a digestive system, a respiratory system, and a cardiovascular system, each of which has specialized organs and tissues that work together to perform their specific tasks.

Compartmentalization also allows for greater control and regulation of different processes within an organism. For example, the nucleus of a cell is separated from the rest of the cell by a membrane, which helps to protect the genetic material and regulate its functions.

By dividing larger structures into smaller, distinct compartments, organisms are able to adapt and evolve to their environments more effectively.

To know more about Compartmentalization, refer to the link below:

https://brainly.com/question/30657437#

#SPJ11

Millie should mate with Denver if Mrs. Jay wants to get puppies that are dark brown, light brown, and white.

To determine which dog Millie should mate with to get three different colors of puppies, we need to use Punnett Squares to predict the possible outcomes of the offspring.

First, let's consider the mating between Millie and Denver. Since Millie is heterozygous (BB'), we will use B and B' to represent her alleles. Denver is also light brown, so he must be heterozygous as well (BB').

|   | B  | B' |
|---|---|---|
| B' | B'B' | B'B' |
| B  | BB  | BB' |

According to this Punnett Square, there is a 25% chance of getting dark brown puppies (BB), a 50% chance of getting light brown puppies (BB' or B'B'), and a 25% chance of getting white puppies (B'B').

Next, let's consider the mating between Millie and Charley. Since Charley is white, he must be homozygous recessive (B'B').

|   | B' | B' |
|---|---|---|
| B' | B'B' | B'B' |
| B' | B'B' | B'B' |

According to this Punnett Square, there is a 100% chance of getting puppies that are heterozygous light brown (B'B'), but there is no chance of getting dark brown puppies or white puppies.

Based on these Punnett Squares, it looks like Millie should mate with Denver if Mrs. Jay wants to get puppies that are dark brown, light brown, and white. However, it's important to note that these are only predictions and there is always a chance that the actual outcomes could be different.

To learn more about puppies, refer below:

https://brainly.com/question/17712053

#SPJ11

The correct match for column a and column b questions are as follows:

1. Windbreaker (e) - slows down the speed of typhoons/storms.
2. Wood (g) - major source of fiber for the production of pulp and paper.
3. Lumber (i) - processed wood used to construct houses for man and animals.
4. Paper (b) - product made from fiber harvested from wood pulp of trees.
5. Rubber (d) - the product produced from juice of some trees.
6. Turpentine (c) - derived from sap of some trees.
7. Erosion (j) - geological process in which earthen materials are worn away and transported by natural forces such as wind or water.
8. Sugar (a) - extracted from wood pulp of sugar plant.
9. Carbon dioxide (f) - this is what man gives off.
10. Oxygen (h) - this is what trees give off.

To learn more about rubber, refer below:

https://brainly.com/question/11805368

#SPJ11

Answer: one organism

Explanation: An individual is one organism and is also one type of organism (e.g., human, cat, moose, palm tree, gray whale, tapeworm, or cow in our example). The type of organism is referred to as the species.

The e. coli O157:H7 and K12 are both strains of E. coli, but they have different genome sizes and gene contents due to differences in their evolutionary histories.

These changes can occur randomly or be driven by environmental pressures such as competition for resources or exposure to antibiotics.

E. coli O157:H7 and K12 are both strains of E. coli, but they have different genome sizes and gene contents due to differences in their evolutionary histories. E. coli K12 is a non-pathogenic strain that has been extensively studied as a model organism for genetics and molecular biology. It has a relatively small genome (~4.6 million base pairs) and lacks many of the genes that are required for virulence or survival in harsh environments.

On the other hand, E. coli O157:H7 is a pathogenic strain that has acquired many additional genes through HGT that allow it to cause severe foodborne illnesses such as hemorrhagic colitis and hemolytic uremic syndrome. It has a larger genome (~5.5 million base pairs) and contains many virulence genes, such as those encoding Shiga toxin, which is responsible for the severe symptoms of the disease. Other acquired genes in E. coli O157:H7 confer resistance to antibiotics, ability to utilize unusual carbon sources, and ability to survive in acidic environments, which may contribute to its success as a pathogen.

In summary, differences in genome size and gene content between closely related strains of bacteria can arise through a variety of evolutionary processes. The acquisition of new genes can confer new capabilities and enable adaptation to different environments, which can be critical for survival and pathogenesis.

To know more about e. coli O157:H7

https://brainly.com/question/30500999

#SPJ4

Writing a research paper requires careful planning, thorough research, and strong writing skills. By following a well-organized outline and carefully citing all sources, a successful research paper can be achieved.

In order to write an effective research paper, it is important to follow a well-organized outline and to thoroughly research the topic. The first step in writing a research paper is to create an outline, which will serve as a roadmap for the paper. The outline should include a thesis statement, the main points or arguments, and supporting evidence or research.

Once the outline is complete, it is time to begin researching the topic. This can be done by conducting a literature review, reviewing academic journals, and gathering data from reputable sources. It is important to take detailed notes during the research process and to keep track of all sources for proper citation.

After the research is complete, it is time to begin writing the paper. It is important to start with a strong introduction that grabs the reader’s attention and clearly states the thesis statement. Each main point should be addressed in a separate paragraph, and supporting evidence or research should be used to back up each argument.

As the paper is being written, it is important to proofread and revise the writing to ensure that there are no errors in grammar, spelling, logic, or cohesion. A well-written paper should flow smoothly and be easy to read.

Finally, a works cited page should be added to the end of the paper to give credit to all sources used in the research. This is important to avoid plagiarism and to maintain academic integrity.

To know more about writing research paper, refer to the link below:

https://brainly.com/question/30404652#

#SPJ11

Complete Question:

Write your research using your outline and the research you’ve collected. Be sure to proofread and revise your writing to catch any errors in grammar, spelling, logic, or cohesion. Remember that you must add a works cited page at the end of your paper to give credit to your sources.

The example that best describes the order of energy flow in an ecosystem is: sun → alga → small fish.

In this example, the sun provides energy to the alga through photosynthesis, and then the small fish obtain energy by consuming the alga. This is an example of the basic pattern of energy flow in a food chain, where energy is transferred from one organism to another as they are consumed.