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.
举一反三
- 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. A: 正确 B: 错误
- 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.
- The most abundant greenhouse gas in the atmosphere is . A: nitrous oxide B: methane C: chlorofluorocarbons D: carbon dioxide
- One way in which scientists study climate change is through ice core samples. What info does this tell us about the climate? A: Nothing, this is not a way to study climate change. B: greenhouse gas concentrations, atmospheric conditions and trends in atmospheric temperature C: rate of solidification of greenhouse gases in the atmosphere D: impact of changing sea levels on the climate E: frequency of thermal inversions in the atmosphere
- 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.