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guajiro [1.7K]
11 months ago
13

What is the function of the Earth's atmosphere?

Biology
1 answer:
SOVA2 [1]11 months ago
5 0

Answer:

its "C"

Explanation:

On our planet we can survive thanks to a layer of different composition of gases that surrounds the whole Earth. This layer remains on Earth thanks to gravity. It is the earth's atmosphere, and it is difficult to determine exactly its thickness, since the gases that make it up become less dense with height, until they practically disappear a few hundred kilometers from the surface.

The atmosphere fulfills various functions for life on the planet and without it we would not be able to have life as we know it.

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Explain the difference between prezygotic isolating mechanisms and postzygotic isolating mechanisms.
anastassius [24]
<h3><u>Answer and Explanation;</u></h3>
  • Prezygotic isolation is a type of reproductive isolation that occurs before the formation of a zygote can take place. In most cases mating does not even occur. Forms of prezygotic isolation include spatial, behavioral, mechanical and temporal isolation.
  • Postzygotic isolation on the other hand occurs after members of two different species have mated and produced a zygote. Forms of postzygotic isolation includes; hybrid sterility, hybrid inviability and hybrid breakdown.
  • Therefore; Prezygotic isolation prevents the fertilization of eggs while postzygotic isolation prevents the formation of fertile offspring.
4 0
3 years ago
The initial step in the formation of an aminoacyl-tRNA is Group of answer choices esterification of the tRNA activation of the t
asambeis [7]

Answer:

The initial step in the formation of an aminoacyl-tRNA is activation of the amino acid by reaction with ATP

Explanation:

In protein synthesis, the first step involves the formation of an aminoacyl-tRNA. This reaction is catalyzed by the the Mg²⁺-dependent enzymes known as aminoacyl t-RNA synthetases and occurs in two steps.

The first step of the reaction of the formation of an aminoacyl-tRNA is the  activation of the amino acid by the attachment of an AMP molecule formed from the hydrolysis of ATP to AMP and pyrophosphate. The aminoacyl adenylate intermediate is bound to the enzyme in this initial step. Subsequently, in the second step of the activation of the amino acid, the aminoacyl adenylate intermediate is then transferred to its specific tRNA. The pyrophosphate formed in the first step is hydrolyzed to 2 phosphate molecules by a pyrophosphatase.

The overall reaction step is illustrated below:

Amino acid + tRNA + ATP -----> aminoacyl-tRNA +AMP + 2Pi

7 0
3 years ago
Will give Branliest!
Deffense [45]

Answer:

B

Explanation:

6 0
2 years ago
What does it mean that earlobe attachment is a continuous trait?​
mylen [45]

Answer:

If you decided that the continuous spectrum of earlobe shape was a more accurate way to describe the variation, you aren’t alone. Family and genetic studies show that earlobe attachment is actually not a simple trait, but rather a complex trait, affected by multiple genes and environmental factors.

3 0
3 years ago
Which of the following choices would be the most logical third step in Connell's experimental procedure, permitting him to eithe
gizmo_the_mogwai [7]

Answer: B) The experimental group tests to see if the presence of Balanus in some manner prevents Chthamalus from growing.

Explanation:

The most logical third step in Connell's experimental procedure, permitting him to either accept or reject his hypothesis of competitive exclusion is the experimental group tests to see if the presence of Balanus in some manner prevents Chthamalus from growing.

Balanus is a species of crustacean, as know as sea acorns, whereas Chthamalus is a species of barnacles that can easily be found in the northern hemisphere's coasts.

8 0
3 years ago
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