Question

how does deforestation lead to frequent floods drought

Answer 1

Lets talk about floods. For example floods are coming over to a place which is behind a forest. Obviously the speed would decrease because the water needs to uproot trees to move forward. Trees act as a barrier so if we deforest then we could have dangerous floods!!!

Now drought.
Maybe you would have known that rain also depends upon trees. So less number of trees rain would decrease and due to lack of water we suffer with drought.
So you may have understood the reasons.
Thanks
Shawez :)

Answer 2

Answer:

The trees help to hold the soil particles together. When we cut the trees these soil particles become loose, thereby reducing their capacity to hold and absorb water. Thus, whenever there are rains soil erosion and floods take place due to inability of these particles to absorb water.

As for droughts, the trees release oxygen by taking in carbon dioxide. This oxygen cools the region in which there are trees. This is why you may have noticed that forest areas are always cooler than surrounding areas. When these trees are cut down, the place becomes warmer. Thus the water vapour in the air does not condense to form clouds, thereby causing droughts.

Explanation: