Fill in the blank: The building blocks of proteins are of which there are in the body. All amino Acids have 2 important groups: an group and an acid group. The part of the molecule that differs is called the group. Amino Acids are joined by dehydration synthesis and linked by a bond.

first blank; amino acids

second blank; 20

third blank; amino

fourth blank; side

fifth blank; peptide

Explanation:

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the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.