Which of the following is true about Earth's freshwater, air, soil and trees?
A. Although these resources are renewable, their present benefits can be reduced if used carelessly.
B. Although these resources are renewable, they present very few benefits for humans.
C. These resources are nonrenewable, so humans must stop using them if they are to survive.
D. Although these resources are nonrenewable, humans don't have to worry about conserving them