What is the most abundant fossil fuel?
a. oil
b. coal
c. gas
d. wood

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons

How does the bare soil surface type affect the amount of runoff