中国大学MOOC: Laboratory-based efforts are attempting to make new forms of energy while mopping up carbon dioxide, an unwanted greenhouse gas, from the atmosphere.
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.
- 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.
- The most abundant greenhouse gas in the atmosphere is . A: nitrous oxide B: methane C: chlorofluorocarbons D: carbon dioxide
- 中国大学MOOC: 3. Earth’s climate changes over time — the last ice age is evidence of that — but it’s the rapid rate of change and the amount of the greenhouse gas carbon dioxide filling up the atmosphere that have scientists concerned.
- Carbon dioxide, the main greenhouse gas in the atmosphere, comes from all of the following except ________. A: growing plants B: burning trees C: burning fuels D: breathing animals