Which part of the human body controls the nervous system?
a. nerves
b. brain
c. spinal cord
d. eye

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.

What is the measured amount of a product obtained from a chemical reaction?

What is the chemical formula for dihydrogen monoxide