Author Question: The gas that shows the most variation from place to place and from time to time in the lower ... (Read 102 times)

s.tung · **on:** Jul 13, 2018

The gas that shows the most variation from place to place and from time to time in the lower
atmosphere is:
a. ozone (O3).
b. carbon dioxide (CO2).
c. water vapor (H2O).
d. methane (CH4).
e. argon (Ar)

Question 2

In a volume of air near the earth's surface, __________ occupies 78 percent
and __________ nearly 21 percent.
a. nitrogen, oxygen
b. hydrogen, oxygen
c. oxygen, hydrogen
d. nitrogen, water vapor
e. hydrogen, helium