How are floods and droughts caused by deforestation and soil erosion?
Trees are natural water tanks. They absorb water during rain. When you cut trees, water can’t be absorbed, so they have to go where gravity takes them, which causes flood. Some water is absorbed into the soil. Deforestation causes soil erosion mostly due to wind movement. Forest stops wind from blowing too fast. Without forest, wind blows fast, evaporating water from soil, bringing dirt and sand, causing soil erosion, and changing chemical and physical composition of the soil. Physically, soil erosion causes the soil to absorb less water. Eventually, deforestation and soil erosion would dry up the place where it happens, since water isn’t absorbed. This will disrupt the natural water cycle, and causes drought, causing also heavy rainfalls and floods.