Answer:
I think it might be the last response, since it takes about what some say, 550 million years...
It might be wrong... But take it into consideration that it might be the right answer.
Answer:
C. It’s impossible because think about it we don’t have good/ great enough data to explain or prove which is older
Explanation:
Answer:
Defined as an organism whose presence, absence or abundance reflects a specific environmental condition,
Explanation:
