*practice
multiple choice
what processes are involved in the formation of igneous
rock?
chemical and physical weathering, deposition, and compression
changes in heat and pressure
melting and cooling
erosion and deposition

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.