Humans
have increased _______ of carbon dioxide, the most abundant
heat-trapping gas in the atmosphere.
A: altitude
B: content
C: concentration
D: saturation
have increased _______ of carbon dioxide, the most abundant
heat-trapping gas in the atmosphere.
A: altitude
B: content
C: concentration
D: saturation
举一反三
- The most abundant greenhouse gas in the atmosphere is . A: nitrous oxide B: methane C: chlorofluorocarbons D: carbon dioxide
- Why is more earth's heat blocked from escaping with more carbon dioxide in the atmosphere A: Carbon dioxide prevents the sun's energy from going back into space. B: Carbon dioxide radiates the sun's energy onto the earth. C: Carbon dioxide produces more heat in the atmosphere. D: Carbon dioxide takes in the sun's energy at infra-red wavelengths.
- Among the gases in the atmosphere, only the concentration of carbon dioxide may result in preventing heat around the Earth from escaping.
- The concentration of carbon dioxide is caused by_______. A: the heat accumulated in the atmosphere B: the burning of coal C: the wide use of renewable energy D: the destruction of the tropical rain forest
- Burning coal, oil and natural gas are ways to reduce carbon dioxide in the atmosphere.