Answer:
Without the trees, water runs off rather than percolating into the
soil.
Explanation:
Flooding is the excessive flow of water due to increased rainfall. It usually deprives the soil of the affected area of essential nutrients. However, the presence of trees in an area can help prevent or reduce the possibility of flooding. The roots of large trees help hold the soil together, which improves the porousness of the soil. Also, trees store water that is meant to runoff.
Without the trees, the absorption or percolation of water into the ground/soil will be reduced, hence, the excess water runsoff the surface leading to flooding.