Question

Explain how clearing of land also has a detrimental impact on the water supply.

Answer 1

Let's say that the land has pollution meaning there is trash everywhere and dead plants over there, with those types of pollution it will harm our water supply because sometimes the pollution can affect our water.
Clearing the lands that has pollution can do good for our water and our ecosystem. When we clean the lands, more plants are able to grow, animals build their homes there, etc. That means that the animals and/or plants have a drinking water that is safe to drink and isn't polluted because we cleaned the land and the water. 
Keep America clean.

Hope this helped :)
Have a great day 

Answer 2

Answer:

The clearing of land generally means the erosion of soil. This soil erosion usually takes place due to the lack of precipitation, deforestation process and surface runoff or flood.

This soil erosion process affects the water supply directly. Due to the lack of vegetation in an area, the moisture content in the soil decreases significantly or vanishes, as a result of which the soil particles are extensively eroded by the wind and water.

Some of the soil particles are also added to the streams and river due to the surface runoff, or flooding in that area.

These soil particles comprising of different minerals when added to the rivers,  it affects the water quality, affecting the freshwater organisms and also extensive accumulation of these sediments lead to a decreasing rate of photosynthesis for the aquatic plants.

Explanation: