The changes in permafrost has very little effect on traditional lifestyles of local population,animal migrations,and ecosystems.
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Q20: Uncertainty in projecting probable greenhouse-effect heating arises
Q21: Signs of global warming are more evident
Q22: Climate changes can influence the spread of
Q23: The limited resolution of global climate models
Q24: Concerns about greenhouse-effect heating relate not only
Q26: It is difficult to determine the effect
Q27: The term "greenhouse effect" refers to an
Q28: If all the polar ice sheets were
Q29: Increased levels of carbon dioxide in earth's
Q30: Slowing the destruction of tropical rain forests
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