Which of the following best explains why deforestation increases the risk of floods in an area?
a.
tree leaves catch and retain rain water.
b.
trees block the free flow of water.
c.
deforestation increases precipitation.
d.
tree roots improve soil water retention.

d. Tree roots improve soil water retention.

Deforestation is a process of removing or clearing forests or other vegetation in order to obtain land for agriculture, construction and other purposes. Deforestation results in decrease in vegetation cover from earth, loss of biodiversity, affects water, oxygen and carbon cycles. Plants and trees are efficient in capturing free flowing water from a water source by absorption through roots during disaster like flood but removal of trees by deforestation can make the area prone to high risk of flood as roots will not be available to absorb water.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray