8. How do nitrogen-fixing bacteria help cycle nitrogen through ecosystems? (1)
A. They release nitrogen into the atmosphere when they replicate their DNA .
B. They convert sunlight into chemical energy which is then stored in the nitrogen.
C. They convert ammonia from animal feces and urine into forms that plants can use.
D. They capture nitrogen from the atmosphere and convert it into forms that plants can use
Nitrogen fixation is a process by which nitrogen in the Earth's atmosphere is converted into ammonia (NH3) or other molecules available to living organisms
