In the semi arid regions of China, the country's inhabitants have practiced water harvesting for generations. Water harvesting is the process of collecting rainfall and/or runoff for later use. How does this water conservation method help the environment?
By collecting run off during the rainy season for future irrigation increases the agriculture production.
Hope this helps!
Sorry for answering so late.
Answer:
By collecting runoff during the rainy season much of the land degredation caused by water erosion is prevented.
Explanation:
On USA test Prep this would be option D.