It is a system of chronological dating that relates geological strata to time.
Answer:
D
Explanation:
Males have testes while females have ovaries
Answer: Pioneer Species
Explanation: Because they are part of a hardy species that whom are the first to move to a previously bio diverse steady ecosystem.
Answer D because humans can effect the way of life in an ecosystem and things like climate can effect them too
Your answer should be The ureters.
i hope i could help!! good luck :)
