_____ is one of the principal gases contributing to the greenhouse effect.
A: Formaldehyde
B: Methane
C: Benzene
D: Nitrogen
A: Formaldehyde
B: Methane
C: Benzene
D: Nitrogen
举一反三
- Carbon dioxide, along with the other greenhouse gases of methane, nitrous oxide, and chlorofluorocarbons, ___ the cause of the greenhouse effect. A: A B: B C: C D: D E: E F: F
- ___________ as certain gases in the atmosphere trap energy is called greenhouse effect.
- Greenhouse gases include . A: carbon dioxide B: CFCs C: methane D: nitrous oxide
- According to the passage, Greenhouse gases do NOT include _______. A: carbon dioxide B: methane C: nitrous oxide D: fossil fuels
- Which of the following is not true about the greenhouse effect? A: Water vapour belongs to greenhouse gases. B: The greenhouse effect is a bad thing. C: Carbon Dioxide is the main greenhouse gas. D: The melting of the polar ice caps will accelerate because of the greenhouse effect.