Answer:
1.Water
2.vascular tissue to transport materials throughout the pant
Explanation:
I just took the test.
The main challenge faced by the first land plants was access to WATER. Plants responded to this challenge by developing vascular tissue to transport materials throughout the plant.
The land plants evolved to maintain life in dry conditions because the land is an environment where water is a limited resource.The plant vascular tissues include phloem and xylem, which work together to move substances (including water) within the plant.Xylem transports water from the roots up to other plant tissues, whereas phloem moves sucrose between the leaves and other plant tissues.In conclusion, the main challenge faced by the first land plants was access to WATER. Plants responded to this challenge by developing vascular tissue to transport materials throughout the plant.
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In a sentence, write one interesting fact about plant, animal and bacterial cells.
Answer:
Animal cells are typically large, specialized eukaryotic cells they contain a nucleus and numerous organelles.
Explanation:
Can someone please help me plz don’t say nothing if you gone put som funny
Are tsunamis all the same size along a coastline?
Answer:
No, some are taller and some can be shorter and they all have a different impact.
Explanation:
{Hope this helps} : )
I need help ASAP I need this assessment done by 10:00 and its 9:00
You have explored some informative examples of models. Now it's time to get creative and make your own model. Here is the requirement checklist for your model:
Model types can include drawings, diagrams, physical models, virtual simulations, or videos.
Model must be created by you, not something selected from an online or outside source.
Submit a presentation, picture, video, or screenshot of your model.
Submit a one-paragraph summary describing the topic you chose, your model, what it represents, how you made it, and the specific science involved. It is important that you are using science terminology and are accurate.
there are three topics, I chose cellular respiration but you can do carbon cycle or photosynthesis if either of them is easier
Answer:
This says 'No online sources' but whatever, I'll help with what I can.
Explanation:
You could do a drawing of the photosynthesis cycle, cause thats what I'm best with. The paragraph is on you.
which of the following is an example of an indirect observation
Answer:a).
Explanation:
Answer:counting rings on a tree stump to determine its age
Explanation:
Identify which question can be answered through science and which cannot
Answer:
the last two cant be answerd in science
Answer:
Science can only answer questions about the natural world that can be determined through observation and experimentation. Science cannot tell you what is good, bad, beautiful, or ugly.
Explanation:
hope this helps!!!!!
;-)
How long are blue whales in kilómetros
Answer:
blue whales reach a staggering 100 feet 30 meters long, and they weigh upwards of 200 tons 181 metric tons. Still not impressed May 3, 2015
Explanation:
Blue whales are 24-30 meters long.
What is the purpose of using a pedigree?
to study the causes of traits that are acquired during an organism's life
to understand patterns of inheritance in organisms
to determine mating patterns in organisms
to identify traits that are acquired during an organism's life'
Answer:
B) to understand patterns of inheritance in organism
Explanation:
The pedigree's purpose is to understand patterns of inheritance in organism. Examination of the pedigree utilizing the standards of Mendelian legacy can decide if a characteristic has an overwhelming or passive example of legacy. Families are frequently built after a relative harrowed with a hereditary issue has been distinguished.
The purpose of using a pedigree is to understand patterns of inheritance in organisms. Therefore, the correct statement is option B.
What is a pedigree?A pedigree is a diagram showing the relationships between family members and their inheritance of specific traits. The pedigree of a family is studied from which scientists can analyze the patterns of inheritance for a particular trait, which can be dominant or recessive, and the inheritance of trait from one generation to the next generation.
Pedigrees identify individuals who may have any genetic disease or trait, and can predict the particular trait in future generations also, Scientists also understand the inheritance of complex traits controlled by multiple genes and environmental factors.
Pedigrees are used in human genetics for studying the inheritance of genetic diseases and inheritance patterns in other organisms, such as plants to better understand the genetic basis of traits.
Therefore, the purpose of using a pedigree is to understand patterns of inheritance in organisms.
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Which part of the cell does this illustration represent?
A. Mitochondria
B. Golgi apparatus
C. Endoplasmic reticulum
D. Vacuoles
Answer:
The answer is mitochondria
Explanation:
miticondria is the power house
Cellular respiration occurs in mitochondria which is the powerhouse of the cell and produces ATP using chemical energy found in glucose.
What is cellular respiration?
It is the process by which sugar is broken down and turned into energy by the cells in plants and animals. The energy produced is then used to perform work at the cellular level.
Why it is called cellular respiration?
The cells seem to respire in a way that takes in oxygen and leaves out carbon dioxide, ATP and water as an end product.
The three main steps of cellular respiration include
GlycolysisKrebs cycle (citric acid cycle)Electron transport system Oxidative phosphorylation)Glycolysis occurs in the cytoplasm, The citric acid cycle (Krebs cycle) occurs in the mitochondrial matrix and Oxidative phosphorylation occurs in the inner mitochondrial membrane.
Cellular respiration can occur both aerobically(using oxygen) or anaerobically(without oxygen).
Most of the ATP produced by aerobic cellular respiration is made by oxidative phosphorylation. It provides cells with the energy they need to function.
During cellular respiration, one glucose molecule is metabolized to yield 38 ATP molecules.
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Which body system works with your digestive system to push your food along through your intestines?
skeletal
circulatory
muscular
respiratory
Answer:
Muscular.
Explanation:
Smooth muscle lining your intestines contracts and relxes, pushing food through the intestines.
Answer:
on edge2020 the answer is C muscular
Explanation:
Which statement best describes a keystone species?
O A. Its birthrate is the highest of all the species in the community.
B. It has the highest amount of genetic diversity in the community.
C. It serves as a predator of many other species in the community.
D. Its extinction would cause a significant change in the community.
Answer:
D. Its extinction would cause a significant change in the community.
Explanation:
A keystone species is a species that helps define an entire ecosystem. If its keystone species disappeared, the ecosystem would significantly change or even disappear, too.
There are several types of keystone species:
Predators - they help control the populations of other species, e.g. sharks.Engineers - they create, change, or destroys a habitat, e.g. beaver.Mutuals - two or more species interact for each other’s benefit, e.g. bees and flowers.Based on this information, we can conclude that the correct option is D.
Four mechanisms of natural selection
Which of the following is the same as 1 gram?
O A. 10 g
O B. 10 cg
O C. 10 dg
O D. 10 kg
10 dg is same as 1 gram. So, the correct option is (C).
What is Unit conversion?Units of measurement are needed to measure the following quantities like speed, velocity, weight, temperature, etc. when the units of measurement used for measurement are based on preference and convenience as well as standards prescribed for certain processes and applications. does not eat , Converting such units to the extent that they can be directly understood and applied properly.
For accuracy and to avoid confusion in measurement, we convert one unit to another unit like we do not measure the length of a pencil in kilometer. In this case, kilometers (km) have to be converted into centimeters (cm).
Some unit conversions are:
1 kilometer = 1000meters
1 kilogram= 1000grams
1gram = 0.1cg or 1dg (cg= centigrams and dg=decigrams)
Thus, 10 dg is same as 1 gram. So, the correct option is (C).
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The process by which living organisms use to help break down food molecules to release energy is
Answer:
respiration
Explanation:
On remarkable realization associated with the discovery of sea floor spreading was that
Answer:
Compared to continents, the crustal floor of the oceans is very young.
Explanation:
This is true because oceanic crust is constantly being recycled. It is subducted into the mantle where it is destroyed and new oceanic crust is produced at mid-oceanic ridges, so it is younger than the continents.
Someone help me with this
Answer:
D
Explanation:
Active transport requires energy but diffusion does not
what is the meaning of homogenes
Answer:
homogenes- of the same kind; alike
It's a material or system that has the same properties at every point.
explain what happens to most of the mass gained by the plant cell through photosynthisis
Which of the following best describe gas
particles?
Answer:
gas is a state of matter that has no fixed shape or volume
Explanation:
A gas is a state of matter in, which atoms remains in a constant motion, they do not stick together. They are free and can move in all directions. The gas molecules expands to fill the available space
Can someone help me with this I’m not very good with cells.
Answer:
sure what is it
Explanation:
Salt has the chemical formula NaCl because it is made up of atoms of Sodium (Na) and Chlorine (Cl). Which statement most accurately describes this compound in relation to the elements it is made of?
A. When sodium and chlorine chemically combine, they create a substance with completely different properties
B. Salt has similar properties to the sodium and chlorine it is made of
C. Once salt is formed the sodium and chlorine atoms no longer exist, only salt atoms
D. Salt can easily be separated back into sodium and chlorine atoms through physical means
Answer:
A. When sodium and chlorine chemically combine, they create a substance with completely different properties
Explanation:
B. Salt has similar properties to the sodium and chlorine it is made of
- Chemical compounds (salt) have different chemical properties than the elements (Na and Cl) are made out of.
C. Once salt is formed the sodium and chlorine atoms no longer exist, only salt atoms
- there is no such thing as salt atoms the atoms still exists in order to form the compound
D. Salt can easily be separated back into sodium and chlorine atoms through physical means
- chemical compounds can only be separated by chemical means
SOMEONE HELP I DONT GET IT SCHOOL IS SO STRESSFUL
Answer:it’s upside down I can’t see
Explanation:
Answer:
3
Explanation:
what is the correct order for the levels of organization in living systems from the simplest to the most complex
Answer:
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Explanation:
Living things are highly organized and structured, following a hierarchy that can be examined on a scale from small to large. The atom is the smallest and most fundamental unit of matter. It consists of a nucleus surrounded by electrons. Atoms form molecules which are chemical structures consisting of at least two atoms held together by one or more chemical bonds. Many molecules that are biologically important are macromolecules, large molecules that are typically formed by polymerization (a polymer is a large molecule that is made by combining smaller units called monomers, which are simpler than macromolecules). An example of a macromolecule is deoxyribonucleic acid (DNA), which contains the instructions for the structure and functioning of all living organisms.
I HOPE THIS HELPS
Organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and biosphere are the biological stages of structure of living things, listed from the simplest to the most complex.
What are levels of organization in living systems?Living things have a strong sense of order and organization that may be studied on a scale from small to enormous. The lowest and most basic unit of matter is the atom.
It comprises a nucleus surrounded by electrons. Atoms combine to create molecules, which are made up of at least two atoms and are joined by one or more chemical bonds.
Therefore, 13 organizational levels.
Atoms, molecules, organelles, cells, tissues, organs, organ systems, creatures, populations, communities, ecosystems, biomes, and biosphere are the sequential representations of these elements.
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There are a few types of enzymes, but they each perform many types of
reactions. *
true or false
Answer:
true
Explanation:
A scientist conducted an experiment to determine the effect of environment on the color of fur of a himalayan rabbit. the himalayan rabbit typically has a white coat except for its colder nose, feet, tail, and ears, which are black. the black hair allows the rabbit to absorb more heat and keep these extremities warm. the scientist shaved an area of hair on the back of each rabbit, then placed an ice pack over the shaved area on only rabbit
a. the scientists kept the area chilled with an ice pack until the hair had grown back on both rabbit's backs.
The question is incomplete as the figure and question part is missing, however, the figure is attached with the answer and question as follows:
what is the independent variable in this experiment?
What is the hypothesis she is testing?
Rabbit B essential to this experiment?
Answer:
The correct answers are:
The ice (temperature is the variable).
The fur of the Himalayan rabbit changes color with temperature.
Rabbit B is the control group. An experiment without control has no value because the cause of the change cannot be determined.
Explanation:
In this experiment, the researcher is finding the effect of the temperature on the color of the fur to find this she needs a hypothesis which is The fur of the Himalayan rabbit changes color with a change in the temperature.
To test this she needs to have manipulated the temperature which is the independent variable her and she used the ice to manipulate it so the independent variable is ice. The rabbit B has not got any type of treatment as rabbit A gets so it is the control group that is used to compare it with the experimental group.
A species of hawk occupies the same niche in a forest that a species of falcon occupies in a nearby forest. What would be the most likely result if members of the hawk population were introduced to the falcon's forest? (3 points) Either the hawks or the falcons would die off or move away. The falcons would kill the hawks. The hawks would adopt a new diet. The falcons and hawks would coexist in the forest.
Answer:
Either the hawks or the falcons would die off or move away.
Explanation:
Ecological niche refers to the role an organism plays in an ecosystem, which includes how it obtains food, how it interacts, mating etc. two organisms CANNOT occupy the same ecological niche, according to the COMPETITIVE EXCLUSION PRINCIPLE. This is attributed to competition among both species, which will cause one to outcompete the other.
In this case, a species of hawk occupies the same niche in a forest that a species of falcon occupies in a nearby forest. This means that both species of birds (falcon and hawk) cannot coexist or love together. Hence, either the hawks or the falcons would die off or move away.
Which of the following would cause an increase in competition in a forest ecosystem?
(A) decrease in the number of plants
(B) increase in the number of plants
(C) increase in the amount of sunlight
(D) decrease in the number of Bears
The ____ contains all the water at or near earths surface
Which two statements describe what happens to energy during cellular
respiration?
A. Some thermal energy is transformed into chemical energy.
B. Chemical energy is transferred to molecules of ATP and used to
carry out life processes.
I C. Light energy is transferred to molecules of ATP and used to carry
out life processes.
D. Some chemical energy is transformed into thermal energy.
E PREVIOUS
When an atom is found in pairs it is referred to as a ________________molecule.
Answer:
When an atom is found in pairs it is referred to as a diatomic molecule.
Explanation:
An example of a diatomic molecule is oxygen.
Please mark as helpful if it is!
Answer: a diatomic molecule
Explanation:
When two atoms combine, it forms an covalent bond, the collection of atoms is called a molecule. This proves that a molecule is the simplest unit of a covalent compound.