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85 which of the following best describes how the

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85.Which of the following best describes how the greenhouse effect works?A) A planet's surface absorbs visible sunlight and returns this absorbed energy to spaceas infrared light. Greenhouse gases slow the escape of this infrared radiation, which therebyheats the lower atmosphere.B) The greenhouse effect is caused primarily by ozone, which absorbs ultraviolet lightand thereby makes the atmosphere much hotter than it would be otherwise.C) Greenhouse gases absorb X rays and ultraviolet light from the Sun, and this absorbedradiation then heats the atmosphere and the surface.D) Greenhouse gases absorb infrared light coming from the Sun, and this absorbedsunlight heats the lower atmosphere and the surface.Points Earned:1.0/1.0CorrectAnswer(s):A
86.Suppose that Earth's atmosphere had no greenhouse gases. Then Earth's average surfacetemperature would be
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C) some 30°C cooler, which means well below the freezing point of water.D) slightly cooler, but still above freezing.Points Earned:1.0/1.0
87.Most of the Moon's surface is densely covered with craters, but we find relatively few craterswithin the lunarmaria. What can we conclude?
88.Which of the following best describes the geological histories of the Moon and Mercury?
Points Earned:1.0/1.0CorrectAnswer(s):B
89.What makes us think that Mars must once have had an atmosphere that was warmer andhad higher surface pressure?A) The presence of inactive volcanoes on Mars tells us that there must once have been alot of outgassing, and hence a thicker atmosphere.B) The fact that parts of Mars have a lot of craters tell us that Mars must once have beenmuch warmer.C) We think it for purely theoretical reasons, based on calculations showing that the Sunhas brightened with time.D) The atmosphere is too cold and thin for liquid water today, yet we see evidence thatwater flowed on the surface in the past.

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Term
Spring
Professor
IGORGLOZMAN
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We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Biology
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Chapter 57 / Exercise 011
Biology
Martin/Solomon
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