The excretory system is most likely to respond when an animal is thirsty in this way: B. by retaining body fluids.
Because the body doesn't get enough fluids to not be thirsty anymore, it retains whatever fluids it already has in it until the thirst is satiated.
the enzymes joins to synthesize anew DNA
Explanation:
because each new DNA molecules is made of one good original new strand
There is no picture, though.
Number of neutrons in the nucleus