Which of these statements is false?
a. the color we see for any object is color that is reflected from it.
b. the primary colors of pigment mix to make white.
c. the primary colors of light mix to make white.
d. white light is made of all colors.

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.