Question

10 mankinds addition of what substance to the soil is responsible for what 68 percent of nitrous oxide (n2o) emissions?
fertilizer
water
seeds
calcium
skip 9/12 complete

Explanation:

Fertilizers often contain nitrogen - based compounds. Microbial activity in soil can convert nitrogen in fertilizers into nitrous oxide (N₂O), contributing to a significant portion of N₂O emissions. Water, seeds, and calcium do not have the same significant link to N₂O emissions from soil in the context of human - added substances.

Answer:

A. Fertilizer