Answer:
acgt
Explanation:
adenine, cytosine, guanine, and thymine
I believe the answer you are looking for is secondary regrowth. Hope this helps
Answer:
evolution is random
Explanation:
there is no explination for evolution over time things find there own way to be better
Two primary functions are ultrafiltration for removal of nitrogenous wastes and excretory products and selective reabsorption for osmoregulation
