Sam is heating water on the stove for his science experiment. how will he know when it is boiling?
a. it will be warm.
b. there will be bubbles forming in the water.
c. the water will turn bluish.
d. the temperature will rise to 80 degrees celsius.

What natural processes produce large quantities of co2

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?

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.