The correct answer is severe erosion. It is because when there is reduced rainfall and a drier climate, the soil in the forest may degrade in which is called soil erosion and if that occurs, there is a displacement in the soil forming degredation, by this, it is not helpful on the plants or trees and even the animals living in the area because if there is a soil erosion, the trees and plants are not suitable to live in the environment and by that, the animals won't be able to live or survive without it as they serve as their living.