Because vegetation, like grass, trees, shrubs, etc., protect the earth below from outside elements. Roots from these vegetation keep the soil on the ground. Without trees there is an increased chance of mudslides, flooding, erosion, etc.
Answer:
I think it is rivers because you can't drink out of the ocean and lakes are nasty aquifers are usually smaller so rivers would be most likely
Explanation:
why would you want to do that?
Answer: Adobe ruins.
geographic information system :)