Question

Nitrogen fixation is______
the process of changing oxygen into a usable form of nitrogen
the process of changing free nitrogen into a usable form
the process of changing fossil fuels into a usable form of nitrogen.
the process of changing fixed nitrogen into a usable form

Answer 1

Answer:

the process of changing free nitrogen into a usable form (the second option listed)

Explanation:

this is the answer by definition

Answer 2

Answer:

the process of changing free nitrogen into a usable form (the second option)

Explanation: