2. what factors might change the relationship between amount of land cleared and the size of the human population.

When population is increases then consumption of all resources will also increases.When population is more then they need more area for making house,for agriculture ,for industries and many more.And we know 31 % are present in the earth surface.So more making the land for sustainable use ,the human population are cutting the trees and this is know as deforestation.

Due to deforestation lots of natural resources are going slowly slowly disappear and making the life of human difficult day on day.

Causes of deforestation:

1.More population

2.Mining

3.Floods

4.Forest fires

5.Logging

6.Agriculture expansion

river is shown in this type of map