Do you think water is main cause of weathering and eroison

Which two nations are doing the most to combat their environmental issues?

When the land and the see warm up at different rates during the day, what is generally the result? -a snow -b rain -c a breeze -d warm temperature

Why do so many children develop illnesses in southern africa? a. poor nutrition due to poverty c. very bad air pollution b. climate many diseases thrive d. declining life expectancy