Answer:
I think trees aka plants would be the answer
Forests.
Explanation:
They decrease the amount of Carbon dioxide & increase the amount of Oxygen.
1g
2e
3j
4a
5c
6b
7i
8d
9f
10h
Answer: My best guess would be B but i might be wrong that sounds most right to me. :)
True
Yes, scientists have observed many mysteries of plants.
