Earth's atmosphere is 78%<span> nitrogen </span>21%<span> oxygen, </span>0.9%<span> argon, and </span>0.03%<span> carbon dioxide with very small percentages of other elements.
hope it helps</span>
Temporal cortex . .................
The food sources available for a particular species in an ecosystem. Also space where they can live and reproduce, but food is the main factor.
A sperm and egg combine to make a zygote. (or fertilized egg)
So, the answer would be "A".
I hope this helps!
~cupcake
Answer: C the Montgomery bus boycotts is a prime example
