Organs .

perform functions that tissues cannot carry out on their own
are made of only one type of tissue
only exist in animals
are less complex than the tissues which make them

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.