Oof I don't think ppl like that (ŏ_ŏ)
Only once because the DNA replication initiation is tightly linked to cell cycle progression,ensuring that replication occur only once per cycle
Blood is pushed through the organism by the heart, and brings nutrients and oxygen to our tissues. It also takes away waste and carbon dioxide from tissues.
I would say tropism because plants can’t respond to their environment by controlling gravity!
