Question

Why are bacteria such as Rhizobium and cyanobacteria so important in the

nitrogen cycle?
A. They return nitrogen gas to air
B. They fix atmospheric nitrogen gas for the food chain
C. They decompose dead plants and animals
D. They build protein in plants

Answer 1

The correct answer is B

Step-by-step explanation:

Got it correct on GAVS..

Answer 2

Answer:A. They return nitrogen gas to air

Step-by-step explanation: