The ________ emits mainly ________ which is also called ________
A) Sun—shortwave radiation—radio waves
B) Sun—longwave radiation—infrared
C) Earth—shortwave radiation—infrared
D) Earth—longwave radiation—thermal infrared
E) Earth—longwave radiation—ultraviolet
D
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Which of the following best matches the description?Substances released into the atmosphere, which in their unmodified form are a health risk.
A. greenhouse effect B. particulates C. oxides of nitrogen D. acid deposition E. ozone F. thermal inversion G. sulfur dioxide H. secondary air pollutants I. radon J. photochemical smog K. primary air pollutants
Why is water vapor not implicated in climate change as methane and carbon dioxide are?
A) Water vapor is not a greenhouse gas. B) Carbon dioxide and methane are not just greenhouse gases, they are also toxic to most organisms. C) The concentration of water vapor in the atmosphere has remained relatively constant despite changes in human activities. D) Water vapor is a liquid, not a gas, so it precipitates out of the atmosphere frequently.
Which factor contributes most to icebergs breaking away from glaciers?
A) wave action B) melting C) sedimentation D) freezing
Which of the following was a French possession during the late 19th and early 20th centuries?
A) Vietnam B) Laos C) Cambodia D) all of the above E) none of the above