Question

Which gas makes up 78 percent of our atmosphere but can be used by plants ONLY when transformed by bacteria first?

A.hydrogen
B.oxygen
C.carbon dioxide
D.nitrogen

Answer 1

Which gas makes up 78% of our atmosphere but can be used by plants ONLY when transformed by bacteria first?

A. Hydrogen

B. Oxygen

C. Carbon dioxide

D. Nitrogen

Step-by-step explanation:

D. Nitrogen

Answer 2

The answer is going to be the letter D, nitrogen. I hope this helps!!