Fertilizer restores which of the following factors that affects soil formation?

Our agricultural activities exert an important influence on the soil biota, their activities and diversity Clearing forested or grassland for cultivation drastically affects the soil environment and hence reduces the number and species of soil organisms. The reduction of quantity and quality of plant residues and the number of higher plants species leads to a reduction in the range of habitats and foods for soil organisms.

Answergranulation;

5×^2+20-15 or -(5x^2-20+15)