Author Question: Typically, water vapor occupies about what percentage of the air's volume near Earth's surface? a. ... (Read 99 times)

crobinson2013 · **on:** Jul 13, 2018

Typically, water vapor occupies about what percentage of the air's volume near Earth's surface?
a. about 78 percent
b. about 21 percent
c. close to 10 percent
d. less than 4 percent
e. less than 1 percent

Question 2

Water vapor molecules
a. are invisible.
b. color the sky blue.
c. make clouds white.
d. are very small drops of liquid water.
e. can exist in the frozen state.