If we go on cutting trees, then the temperature will increase to a greater extent and the water cycle will get disturbed.
If the habitat of an animal is disturbed, the animals will lose their natural habitat and will reach the level of being endangered. Most of the animals may be forced to invade places meant for human living in search of food and shelter.
If the top layer of soil is exposed, then the exposed layer will lose all its nutrients and the water holding capacity of soil will decrease. Desertification will take place.