Question

Do bacteria play a role in maintaining the composition of the atmosphere?

• A. Yes, they play a major role in directly balancing nitrogen.
• B. Yes, they play a major role in directly balancing carbon dioxide.
• C. Yes, they play a major role in directly balancing oxygen.
• D. Yes, they play a major role in directly balancing ozone.

Answer 1

The correct option is A Yes, they play a major role in directly balancing nitrogen.

Plants cannot take nitrogen gas directly from the atmosphere. So we have tiny bacteria that live in the soil and roots of some plants. They convert the nitrogen in the air into a different form that plants can use. This plays a major role in maintaining the composition of air.