本题目来源于试卷: Continuity and Change D.12 Climate Change，类别为 IB生物学
[单选题]
Which characteristics 6m x jv;a fhkps2m2f)(of carbon dioxide; a8z*ze cih +zp.x6fn make it a greenhouse gas of concern?
A. Absorbs long wave radiation and has a significant concentration in the atmosphere.
B. Emits shortwave radiation and has a significant concentration in the atmosphere.
C. Absorbs shortwave radiation and has a high stability.
D. Blocks infrared radiation and has a high stability.
参考答案: A
本题详细解析:
A greenhouse gas is a gas that contributes to the greenhouse effect. Greenhouse gases absorb the long wave infrared radiation (heat energy) emitted from Earth’s surface and can reradiate it back to Earth’s surface. So, one factor that determines whether a gas acts as a greenhouse gas is its ability to absorb long wave radiation: gases that are better able to absorb long wave radiation are more likely to act as greenhouse gases. A second factor that qualifies carbon dioxide as a greenhouse gas of concern is its relatively high concentration in the atmosphere: gases that are in higher concentration in the atmosphere have a larger effect on Earth’s temperature.
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