举一反三
- 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.
- The gas with maximum percentage in the atmosphere is ( ). A: nitrogen B: hydrogen C: oxygen D: carbon dioxide
- The primary buffer system that controls the pH of the blood is the __________ buffer system. A: carbon dioxide, carbonate B: carbonate, bicarbonate C: carbonic acid, carbon dioxide D: carbonate, carbonic acid E: carbonic acid, bicarbonate
- The ingredient of atmosphere does NOT include ______. A: carbon dioxide B: dust particles C: water vapor D: sunlight
- The most abundant greenhouse gas in the atmosphere is . A: nitrous oxide B: methane C: chlorofluorocarbons D: carbon dioxide
内容
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Carbon dioxide, which makes a ____________ between us and the sun, prevent heat from getting out of the the atmosphere easily, so the earth is becoming warmer. A: difference B: comparison C: connection D: barrier
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Among the gases in the atmosphere, only the concentration of carbon dioxide may result in preventing heat around the Earth from escaping.
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carbon dioxide
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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
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中国大学MOOC: The production of commercial concrete materials releases tons of the greenhouse gas carbon dioxide (CO2) into the atmosphere each day, contributing to the calamity of climate change.