It should be transport of waste but I’m not 100% sure :(
The answer is B because A is being changed .
Answer:
<h3>male and female reproductive cells </h3>
Explanation:
<h3>I hope it helps ❤❤</h3>
Protein, the building blocks of proteins are amino acids, different sequences and combinations of these amino acids result in huge numbers of proteins which have a variety of functions.
