Try https://www.sciencedaily.com/terms/water_pollution.htm or https://www.britannica.com/science/water-pollution
Answer:
The sun is what makes the water cycle work. The sun provides what almost everything on Earth needs to goenergy, or heat. Heat causes liquid and frozen water to evaporate into water vapor gas, which rises high in the sky to form clouds... clouds that move over the globe and drop rain and snow.
Explanation:
Hope this helps :)
Alot of them have settled at the edge of the sahara. So A is probably the best and most accurate answer for you.
