The history of life on Earth takes place over the last 3.5 billion years.
The Precambrian represents the last part of Earth before the Phanerozoic Eon. The Precambrian is after the Cambrian, which was the first period of the Phanerozoic Eon.The oldest evidence of life on Earth is associated with Precambrian fossils similar to algae.In conclusion, the history of life on Earth takes place over the last 3.5 billion years.
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It starts with a producer and then shows organisms eating other organisms, with arrows flowing in one direction of what eats what. This illustrates a _______.
food chain
food pyramid
food web
pyramids of numbers
trophic pyramids
Answer:
not sure what exactly it is, but here is some info:
Explanation:
A food web shows what eats what (typically a single line from animal to animal), a food chain shows the whole ecosystem (typically with intersecting lines and a lot of organisms).
HELP-- multiple choice!
How thick is the troposphere?
12–21 miles
1–3 miles
7–13 miles
5–14 miles
Answer:
5-14 Miles
Explanation:
Took the test and that was the correct answer
Why Wegener is not qualified to be proposing theories in the fields of geology and Earth history?
Answer:
Wegener is not qualified to propose theories in the fields of geology and the history of the Earth because there was no mechanism available to endorse his proposals and offer a convincing and truthful explanation, hence the rejection of the Continental Drift, the theory That made him famous.
Explanation:
Wegener is not qualified to propose theories in the fields of geology and the history of the Earth because there was no mechanism available to endorse his proposals and offer a convincing and truthful explanation, hence the rejection of the Continental Drift, the theory that made him famous.
What is north pole and south pole?The north pole has been known as the northernmost point present on earth, and on the other hand south pole has been known as the southernmost part or the point of the earth. The area present in between south pole and north pole has been said that it has been extremely cold and the area present near the equator has extremely hot.
The area of north pole has not the part of any country or the north pole does not lie in any country. The main reason of the coldness of the north pole and south pole has that they do not receive any direct sunlight. The best time to visit the north pole has the time of June and July because in this month the ice of the north pole is thinner as compared to other months.
Therefore, Wegener is not qualified to propose theories in the fields of geology and the history of the Earth because there was no mechanism available to endorse his proposals and offer a convincing and truthful explanation, hence the rejection of the Continental Drift, the theory that made him famous.
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What is another term for
translation?
A. RNA buffering
B. Protein synthesis
C. DNA replication
D. Mitochondrial replication
Sound waves travel at different speeds
depending on the material they are traveling in.
Which correctly orders how sound waves travel
from slowest to fastest?
The slowest one is the one that goes up and down the least the fastest is the one that goes up and down the most i dont know how to explain it hopefully this helps
How does creationism go against the teachings/indoctrination of natural selection and fitness?
Answer:
Creationism says that organisms presence is due to the supernatural acts of divine creations.
Explanation:
The concept of creationism is against the teachings of natural selection and fitness because in the concept of creationism, the presence of organisms occurs due to the supernatural acts of divine creations which rejects the concept of natural selection. In natural selection, the best suited organisms in the particular environment due to high compatibility with environmental conditions and those that are not compatible will extinct from the ecosystem.
help pls
A possible effect of water pollution is
A. intact food chains
B. clearer water
C. bioaccumulation of pollutants
D. more favorable temperatures
C. BIOACCUMULATION OF POLLUTANTSMAKE ME BRAINLIEST, FOLLOW AND HEART
the process represented in the diagram best illustrates?
1. cellular communication
2. muscle contraction
3. extraction of energy from nutrients
4. waste disposal
Answer:
1. cellular communication
Explanation:
The correct option is - 1. cellular communication
Why does the mitochondrial gene tree suggest a later split? Why the disparity between the nuclear gene tree?
this is the link: https://learn.genetics.utah.edu/content/evolution/bears/
Answer:
Why does the mitochondrial gene tree suggest a later split?The mitochondrial gene tree suggests a later split because it occurred hybridization later in time, with the transference of the brown bear mitochondrial genetic information to the polar bear population. So the mitochondrial gene tree exhibits a later divergence.
Why the disparity between the nuclear gene tree?Because the first divergence event of the common ancestor occurred 60,000 years ago, evidenced by nuclear DNI and mitochondrial DNI. However, 100,000 years ago, concerning the mitochondrial genetic material, the hybridization event defined a new more recent common ancestor between the two species.
Explanation:
The use of mitochondrial DNA might present a few problems that need to be considered in evolution studies. It involves only one locus, so it has some limitations when reconstructing history, especially if the locus went through any process, such as natural selection, bottleneck events, or its transference to another population due to hybridization. There is also a high possibility of an incomplete reconstruction of the population history if males and females have different dispersal patterns.
The most proper way of reconstructing history is by complementing mitochondrial information with nuclear genetic information and evaluating their concordancies.
In the exposed example, 600,000 years ago, the original species split into the polar bear and the brown bear. But 100,000 years ago, hybridization occurred between a brown bear female and a polar bear male. The offspring joined the polar bear population, carrying the female genetic information, nuclear and mitochondrial. With time, these individuals interbred with the polar bears, diluting the nuclear brown bear genetic information. However, females carrying the brown bear mitochondrial DNI seemed to be more successful reproductively than the polar bear females. The mitochondrial information, hence, has been in the population for many generations, until today. And this information came from a more recent common ancestor, compared with nuclear genetic information.
PLEASE HELP THIS IS DUE IN 2 HOURS
The answer is lette r B observing organism that occupy
2 points
4. What conclusion can be drawn regarding a community in which many
species are involved in a food web?
It is more fragile since organisms have more than a single food source
It is more fragile since organisms have only a single food source
It is more stable since organisms have more than a single food source
It is more stable since organisms have only a single food source
It is very prone to damage from human interference
During meiosis, which of the following allows for variations in alleles in the gametes
formed?
A) homologous chromosomes stay together
B)chromosome crossover
C)daughter cells identical to parent cells
D)Genetic drift
Answer: B
Explanation:
A colorblind woman is pregnant. The father is not colorblind. What is the probability the child will be colorblind? What is the probability the child will be a carrier of colorblindness? Draw a punnet square to show the parents genotype and then list the genotype and phenotype of the offspring.
theres a 50% the child will be colorblind
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-----------------------------------------------------l----------------------------------------------------------
x l y
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X y
how do lizards regulate body temperature in winter?
Answer:
Lizards are experts in thermoregulation and are able to maintain an ideal body temperature most of the time. Lizards hibernate in winter if the weather is too cold for them to reach the required body temperature.
Explanation:
reptiles regulate their body temperature through what is called thermoregulating . simply put this means basking in a warm area to heat up and moving to a cool are to cool down ..... reptiles hibernate in winter if the weather is too cold for them to reach the required they body temparature
When a water molecule is added to a polymer, the
from water becomes attached to one subunit and the hydroxyl attaches to another subunit, breaking the covalent bond between two monomers. This process is referred to as hydrolysis.
Answer:
Hydrogen
Explanation:
what kind(s) of cells can develop from multipotent stem cells?
which two statements describe disadvantages of selective breeding? this is my 5th time asking please help me.
Answer:
A and C
Explanation:
how many crops are grown in arkansas?
Answer:
6.2 million acres in crops
Explanation:
Hope I helped, have a nice day!
Aaron may have a phobic disorder if he had his first panic attack on his first day at a new high school. Please select the best answer from the choices provided t f
Answer:
False
Explanation:
Edgny 2021
Aaron may not have a phobic disorder if he had his first pain attack on his first at a new high school.
What is phobia?A phobia is an uncontrollable, irrational, and lasting fear of a certain object, situation, or activity. This fear can be so overwhelming that a person may go to great lengths to avoid the source of this fear. One response can be a panic attack. This is a sudden, intense fear that lasts for several minutes.
It is not compulsary that aaron have phobic disorder if he had his first panic attack on his first day at a new high school because he already faced middle school.
Hence given statement is false.
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The cell wall, nucleus, DNA, and ribosomes are found in certain types of cells. Identify which statement below does NOT properly describe the structures that are found in bacterial cells and animal cells.
DNA can be found in both bacterial and animal cells
Cell walls can be found in both bacterial and animal cells
A nucleus can be found in animal cells, but not bacterial cells
Ribosomes are found in both types of cells.
Penguins, which are birds, and seals, which are mammals, do not share a common ancestors, but both have flippers adapted for swimming. Which of the following best describes the flippers of penguins and seals?
Penguins and seals are a result of divergent evolution with vestigial structures.
Penguins and seals are a result of divergent evolution with homologous structures.
The flippers of penguins and seals are analogous structures with similar functions but different ancestors.
The flippers of penguins and seals are homologous structures with similar functions and ancestors.
Answer:
The flippers of penguins and seals are analogous structures with similar functions but different ancestors.
Why are both prereading and postreading strategies used?
O to review meaning
O to increase reading speed
O to enhance comprehension
O to memorize text
Answer:
A. to review meaning
Explanation:
To review meaning are both prereading and postreading strategies used.
What is Prereading?
Before attentively reading a text (or a chapter of a text) from beginning to end, pre-reading is the process of scanning the material to identify essential concepts. sometimes known as surveying or previewing.
Pre-reading gives you an overview, which can help you read more quickly and effectively. Examining (and considering) chapter titles, summaries, headings, subheadings, study questions, and conclusions are typical pre-reading activities.
Students can use pre-reading tactics to anticipate what they will read or hear by considering what they already know about a particular topic. Teachers can focus on a book's organization, teach new vocabulary or other concepts, look for the primary idea, and provide students a reason for reading or listening before they even begin to read any material.
Therefore, To review meaning are both prereading and postreading strategies used.
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what does the 12 fingers mean in the movie GATTACA?
Name six diseases and conditions (or potential uses) where stem cell treatment is being
investigated:
Answer:
Spinal cord injuries, type 1 diabetes, Parkinson's disease, amyotropic lateral sclerosis, Alzheimer's disease, heart disease, stroke, burns, cancer and osteoarthritis may benefit from stem cell therapies.
Explanation:
Hope this helped Mark BRAINLIEST!!!
5. Plants that produce the same traits as parents when they are self-
pollinated are known as
Answer: Plants that always produce the same traits as their parents when they are self pollinated
Mendel used self-pollination in pea plants to grow true-breeding plants for his experiments. When a true-breeding plant self-pollinates, its offspring all have the same traits as the parent. For example, a true-breeding plant with purple flowers always has offspring with purple flowers.
HOPE THIS HELPS
write two substance produced by testes?
Answer:
sperm and the hormone testosterone.
Explanation:
Sperms and hormone testosterone are produced by Testes.
What is Testes?
A testicle, which is pronounced "teh-stuh-kl," is a component of the anatomy of men and those who are born male . You typically have two testicles. These organs produce hormones and sperm.
Male gonads or testes (pronounced "teh-steez") are other names for your testicles. A testis is a single testicle.
The temperature of your testicles is roughly two degrees Celsius lower than the rest of your body. Spermatogenesis, the production of sperm, benefits from cooler temperatures.
Therefore, Sperms and hormone testosterone are produced by Testes.
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How did Francesco Redi disprove the idea of spontaneous generation?
He showed that flies were not produced by meat.
He showed that microorganisms are present in air.
He showed that microorganisms cause disease.
He showed that flies spread disease.
Francesco Redi showed that microorganisms are present in air thereby disproving the idea of spontaneous generation and is denoted as option B.
What is Spontaneous generation?This is supposed production of living organisms from non living substances.
The jar was left open and had maggots in it means the flies laid their eggs which later turned to the maggot which was what Redi observed during the experiment.
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Verdadero o falso mediante el genotipo podemos determinar si existen dominancia en una característica
Answer:
Verdadero
Explanation:
Sabemos que los caracteres dependen de los genes. Y los genes pueden presentarse en forma de alelos dominantes, o alelos recesivos. La expresión de los alelos recesivos son enmascarados o escondidos por el alelo dominante. Es decir, que si ambos alelos se encuentran juntos en un heterocigota, solo el alelo dominante se expresará.
Entonces el alelo dominante expresa la característica que resulta dominante, mientras que el alelo recesivo expresa la característica recesiva.
Genotipo:
Homocigota dominante ----> Expresa caracter dominante (Solo el alelo dominante esta presente)Heterocigota -------------------> Expresa el caracter dominante (Ambos alelos estan presentes, pero el dominante es quien se expresa)Homocigota recesivo --------> Expresa el caracter recesivo (solo alelos recesivos estan presentes)Por ejemplo, si tenemos dos fenotipos rojo y amarillo, y sabemos que el color esta codificado por un gen dialelico llamado M. También supongamos que no sabemos qué alelo expresa qué color. Teniendo solo estos datos, no podemos decir si el rojo es el color dominante o si el amarillo lo es.
Sin embargo, si tenemos los siguientes genotipos acompañando esta información:
MM--> AmarilloMm--> Amarillomm --> RojoRecién ahora podemos deducir que el caracter dominante es el amarillo.
When did the rabbit population reach carrying capacity? Explain how you know?
Answer:
You'll have to post a picture of the problem in order for me to be able to answer the question
Explanation:
Answer: I think it is 50
Explanation:
I think this because that is the usual carrying compacity
What makes the finding of the finding of Wooly Mammoth fossil very unique from other fossils?
Answer:
The wooly Mammoth is a animal that was once tried to be revived and it is very rare to find
Explanation: