Identify the choice that best completes the statement or answers the question. 1
ID: 1711730 • Letter: I
Question
Identify the choice that best completes the statement or answers the question. 1. Which of the following is considered a variable gas in the earth's atmosphere? a. water vapor b. nitrogen c. oxygen d. argon e. all of these 2. The gas that shows the most variation in concentration from place to place and from time to time in the lower atmosphere. a. ozone (O_3) b. carbon dioxide (CO_2) c. water vapor (H_2 O) d. methane (CH_4) e. argon (Ar) 3. The concentration of this gas in the atmosphere can range from about 0% to near 3 or 4%. a. oxygen (O_2) b. ozone (O_3) c. carbon dioxide (CO_2) d. water vapor (H_2 O) 4. The most abundant greenhouse gas in the earth's atmosphere is a. carbon dioxide (CO_2). b. nitrous oxide (N_2 O) c. water vapor (H_2 O) d. methane (CH_4) e. chlorofluorocarbons (CFCs). 5. Which below is not considered a greenhouse gas? a. carbon dioxide (CO_2) b. nitrous oxide (N_2 O) c. water vapor (H_2 O) d. methane (CH_4) e. oxygen (O_2)Explanation / Answer
1)
The "variable gases" are those present in small and variable amounts in the atmosphere. From the given options, the variable gas is water vapour and argon.
2)
The gas that shows the most variation from place to place and from time to time in the lower atmosphere is water vapour. It is varying because of humidity and temperature.
3)
Water vapour is the gas that can exhibit the given concentration.
4)
The most abundant green house gas in the atmosphere is water vapour, up to 3% in the atmosphere.
5)
Oxygen is not considered a greenhouse gas as it does not react with Ozone.