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Contact [7]
4 years ago
9

Why are certain amnio acids called a essential amnio acid?

Biology
2 answers:
Maurinko [17]4 years ago
5 0

Answer:

the best answer is b.) because they are not manufactured by the body

hope this helps and I'm bored

sergeinik [125]4 years ago
3 0
I think the correct answer is D
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What type of tissue connects all parts of a plant allowing for nutrients and water to flow throughthe plant?
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Environmental factors can influence natural selection because they can increase or decrease
olchik [2.2K]

Answer:

Environmental factors can influence natural selection because they can increase or decrease the amount of genetic variation in a population.

Explanation:

Natural selection is a process that involves the survival of species through changes in the expression of their genes, making possible the process of adaptation to environmental changes. It is one of the explanations for the biological evolution of species.

The second premise, necessary for natural selection to be possible, implies the existence of a variability (genetics) of traits among individuals in a population.

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Why do astronauts eat freeze dried food I space
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