If all of Earths water vapor were to suddenly condense and fall as rain, it would be enough to cover the entire globe with ____ of water.
a. 5 cm (2 inches)
b. 100 m
c. 2.5 cm (1 inch)
d. 1000 m
e. 10 cm (4 inches)
Question 2
Evaporation and transpiration from continental areas amount to only about ____ percent of the nearly 1.5 billion gallons of water vapor that annually evaporate into the atmosphere.
a. 15
b. 20
c. 25
d. 30
e. 35
