two question each need 1.5 page double space about soil erosion and land subsidence

I’m working on a Geography exercise and need support.

Discuss Table 4.9 on Page 113 in Reader I. First, you need to discuss general effects of land covers and three (3) effects how forest protects soil from the erosion. You should also address whether there are any relationships between erosion and rainfall, slope, and runoff in any location.

Under what kinds of geological conditions would land subsidence occur after subtract liquid from underground? Describe the main caused for the sinking and land geological conditions of Mexico City and San Joaquin Valley.