Answer:
the answer is A
Explanation:
just got done with that unit
<h2>
<u>Please </u><u>mark </u><u>BRAINLIEST</u></h2>
Explanation:
Like carbon, nitrogen has its own biogeochemical cycle, circulating through the atmosphere, lithosphere, and hydrosphere (Figure 5). ... In this symbiotic association, the bacteria become encased in nodules that grow on the roots of plants, through which nitrogen that has been fixed by the resident bacteria is obtained.
this answer is B. full landfill and another answer is Agricultural runoff (apex)