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Unformatted text preview: concern, since it is part of the normal cycle for the planet. Answer: A Topic: 7.13 Skill: Conceptual Understanding 63) Which of the following statements about the greenhouse effect is true? A) The greenhouse effect is reduced by deforestation. B) The greenhouse effect is exacerbated by the use of fossil fuels. C) The greenhouse effect is inversely related to increasing levels of atmospheric CO2. D) The greenhouse effect will decrease the average temperature of the planet. E) The greenhouse effect has no direct relationship with the Industrial Revolution of the 1800s. Answer: B Topic: 7.13 Skill: Factual Recall 64) It has been argued that cutting old-growth forests and replacing them with plantations of young trees would help to alleviate the threat of global greenhouse warming. What important fact does this argument ignore? A) Forests play too minor a role in global CO2 dynamics, which are affected far more by marine algae. B) Young trees fix carbon at a lower rate per unit mass than old trees. C) Most of the biomass of the cut trees would be added to the atmosphere as CO2 within a few years. D) Most of the young trees would die within a few years. E) Young trees emit ozone-destroying gases at a higher rate than old trees and would thus worsen the ozone-hole problem while alleviating global warming. Answer: C Topic: 7.13 Skill: Conceptual Understanding 65) Ozone 15 A) formation is promoted by CFCs. B) is broken down by carbon dioxi...
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This note was uploaded on 10/31/2012 for the course ENGI 1010 taught by Professor Dr.robert during the Fall '12 term at Dalhousie.

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