If the Earth was in a cooling trend, which of the following processes would most likely act as a positive feedback mechanism?
A. increasing the snow cover around the Earth
B. increasing the water vapour content of the air
C. decreasing the amount of cloud cover around the Earth
D. increasing the carbon dioxide content of the air
Answer: A
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The large, flat-topped hill with a surface area of several square km in an arid region is called:
a. Butte b. Mesa c. Chimney d. Talus aprons
Fair Trade ________ the percentage of the retail price that ________ in ________ countries receive
A) improves, distributors, developed B) protects, distributors, developed C) reduces, producers, developing D) reduces, importers, developing E) improves, producers, developing
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The typical form for a composite volcano is a
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