Humans are having more of a negative impact on Earth in recent years. Based on the cartoon and your prior knowledge, why do you think that is? PLEASE help me! It's science.

Overpopulation

Explanation:

Our earth has a carrying capacity which means the maximum amount of land and resources the environment can give to us without hurting itself. When we go over our carrying capacity we reach overpopulation which hurt our environment

Hope this helps:)

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.