Question

question 13 (1 point) which organisms primarily carry out nitrogen fixation and denitrification? a herbivores b plants c soil microbes like bacteria and fungi d insects

Explanation:

Nitrogen - fixing bacteria convert atmospheric nitrogen into ammonia, and some soil - dwelling bacteria and fungi are involved in denitrification, converting nitrates back to nitrogen gas. Herbivores, plants, and insects are not the main agents for these processes.

Answer:

C. Soil microbes like bacteria and fungi