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tekilochka [14]
3 years ago
12

These are physical features shared by organisms with common ancestry; they may have the same structure. What are these strucrure

s?
Biology
1 answer:
alekssr [168]3 years ago
6 0

Answer:

The correct answer will be- homologous structures

Explanation:

The history of how life has survived on the earth can be studied through a field of biology called evolutionary biology.

Studying the anatomical features of the organisms and the collected specimens (fossils) shows that some organisms posses similar anatomical structures which could be performing different functions.

The structures in organisms which are similar in their structure are thought to have derived from a common ancestor and are known as "homologous structures. "

Thus, homologous structures are the correct answer.

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What type of characteristics are in a carrot
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Answer:

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Explanation:

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4 0
3 years ago
Now we need to prepare a buffer that has a pH of 7.4. We need this specific pH to
Anestetic [448]

Answer:

b) By mixing weak base with its conjugate acid and then adjusting the pH with strong  acid.

Explanation:

Hello,

In this case, considering that the buffer required a pH greater than 7 where the basic conditions are present, we need a weak base and its conjugate base in order to assure such pH greater than 7. Moreover, by using a strong acid, we can gently add it in order to decrease the pH up to 7.4 via a properly measured neutralization of the necessary moles of base up to a hydrogen concentration of 3.98x10⁻⁸ (pH). Therefore, answer is b) By mixing weak base with its conjugate acid and then adjusting the pH with strong  acid.

Best regards.

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3 years ago
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