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labwork [276]
2 years ago
13

Can someone plz help me? :(

Biology
1 answer:
bogdanovich [222]2 years ago
6 0

Answer: C. A snake hides under a rock on a hot day.

Explanation:

Thirst, hunger, and pathogens are internal issues (meaning inside of the body). Weather (heat) is something from the external environment that the snake is responding to (hiding). Therefore, the correct option is C.

Let me know if you have any questions!

<em />

<em>Question: Which behavior is a response to an external stimulus?</em>

<em>A. A dog drinks to quench its thirst.</em>

<em>B. A squirrel eats when it is hungry.</em>

<em>C. A snake hides under a rock on a hot day.</em>

<em>D. A cat vomits to rid itself of pathogens.</em>

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On the Galapagos Islands, Darwin observed tortoises with domed and saddle-shaped shells. How did Darwin's observations of these
photoshop1234 [79]

Answer:

The correct answer would be C.  The tortoises provided evidence that different species have adaptations suited to their particular environments.

Darwin observed that how different environment on different island lead to the development of different species as a result of adaptations and natural selection.

For example, tortoise inhabiting well-watered islands which used to have short and cropped vegetation had developed a dome-shaped shell.  

In contrast, the tortoise inhabiting the arid islands had developed saddle-shaped shells. It is because they needed to stretch their necks in order to reach branches of cactus and other vegetation available in the area.  

Consequently, they developed long necks and high peak to the front edges of their shells. It made it possible for them to stretch their heads vertically.

7 0
3 years ago
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Answer:

This is one example of a chimp DNA diagram

A G C T A C A G A G

A is Adenin

G is Guanine

C is Citosin

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Explanation:

Adenine

Adenine is an organic molecule found in DNA, ribonucleic acid (known as RNA) and adenosine triphosphate, better known as ATP.

Guanine

Guanine is a purine base found in DNA and RNA that binds exclusively with cytosine to form ribonucleosides called guanosine or deoxyribose to form deoxyguanosine.

Thymine

Thymine is a pyrimidine base found in DNA that binds to adenine.

Cytosine

Cytosine is a pyramid-shaped nitrogenous base that binds to guanine in RNA and DNA as nucleotides and functions as part of the genetic code.

#AnswerForTrees

5 0
4 years ago
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Only 2 and 3 thank you
Georgia [21]
2 would be A because fertilization is where the sperm cell and egg unite. 3 would be C because in the picture you can see how the division is occuring.
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