Which of the Following Is True

Multiple Choice

Which of the following is true?

A) both the direct and indirect costs of soil erosion is estimated at hundreds of thousands of dollars worldwide.
B) soil that has eroded could take decades to be replaced.
C) loss of soil,combined with exponential population growth,could lead to serious food shortages.
D) in most of the densely inhabited regions of the world,soil erosion is not a problem.
E) moving from west to east across Canada,the losses of organic material in the soil decrease.