Question

The bacteria can chemically combine nitrogen with hydrogen to form ammonia (NH3). This combining process is called nitrogen fixation.

Which group of organisms chemically combines nitrogen with hydrogen in a process called nitrogen fixation?



A.
all mammals


B.
only aquatic plants


C.
birds and reptiles


D.
bacteria

Answer 1

I think the answer is all mammals.

Answer 2

 I just took the test and the answer is D.bacteria according to the answer key. Hope this helped you out even if I was a week late