Answer:
Biotic
Because the acorn is abiotic.
abiotic factors are non-living physical parts of the environment that affect living organisms and the functioning of ecosystems.
Hydra. I looked it up and saw that is was a microorganism, so that makes the most logical sense.(please consult other users because I am not a reliable source.) good luck anyway :)
Am soorry bro...................
They both help shape how the animal looks like today, & with the traits that the development gives to the animals, it helps them do the tasks they need to do to survive easily. Without these development, the species would become extinct sooner or later
hope this helps
Associative learning is the event may be two stimuli or a response and its consequences