Answer:
A. The respiratory control center senses the need for more oxygen, which causes the trachea to push and pull air more forcefully.
Explanation:
<span>D) a structure made of two or more tissues functioning together for a common purpose.
This is because of the different levels of life. Cell, then tissues, then organs.</span>
100% the answer is B
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So, if your DNA specifies that a protein should be made using the amino acid valine, then lysine, and finally serine, then those amino acids would be assembled in that sequence.
Since the number before the tens place is 1, that means you will round the number down instead of up so your answer is :
4620
