The atmosphere of Mars consists mostly of ______.
A: oxygen
B: carbon dioxde
C: helium
D: nitrous oxide
A: oxygen
B: carbon dioxde
C: helium
D: nitrous oxide
举一反三
- 中国大学MOOC: The atmosphere of Mars consists mostly of ______.
- The most abundant greenhouse gas in the atmosphere is . A: nitrous oxide B: methane C: chlorofluorocarbons D: carbon dioxide
- Greenhouse gases include . A: carbon dioxide B: CFCs C: methane D: nitrous oxide
- Carbon dioxide consists of carbon and （ ） A: oxygen B: emergency C: upgrade D: religious
- According to the passage, Greenhouse gases do NOT include _______. A: carbon dioxide B: methane C: nitrous oxide D: fossil fuels