Question

which scenario will most likely result in a change to the nitrogen cycle that negatively affects plant growth? increasing the amount of fertilizers used on farms planting crops that do not need nitrogen for survival increasing the variety of legumes (bean plants) in a field decreasing the amount of nitrogen - fixing bacteria in the soil

Explanation:

Nitrogen - fixing bacteria convert atmospheric nitrogen into a form usable by plants. Decreasing their amount reduces available nitrogen for plants, negatively impacting plant growth. Increasing fertilizers can provide more nitrogen, non - nitrogen - needing crops don't affect the nitrogen cycle for nitrogen - dependent plants, and increasing legumes can enhance nitrogen fixation.

Answer:

Decreasing the amount of nitrogen - fixing bacteria in the soil