Where is the Sahel located? Is this a region of scarce, variable, or abundant rainfall? Describe the biogeophysical feedback mechanism whereby a reduction in surface vegetation might cause a reduction in precipitation amounts.
What will be an ideal response?
Answers may vary.
Environmental & Atmospheric Sciences
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In 1994, because of concerns about cultural eutrophication, laundry detergent manufacturers voluntarily stopped producing detergents that contained
A) artificial dyes. B) phosphates. C) chlorine. D) nitrogen.
Environmental & Atmospheric Sciences
The division of the Earth that exists below the crust and above the core is the
a. innersphere. d. convection center. b. lithosphere. e. molten zone. c. mantle
Environmental & Atmospheric Sciences
The Russian Federation has a ________ urbanized population; and Central Asia is ________ urban
A) 50%; 50-70% B) 76%; 30-50% C) 72%; 56-69% D) 66%; 20-40% E) 80%; 25-45%
Environmental & Atmospheric Sciences
Cartography is the science and profession of ____
a. data collection b. surveying c. navigation d. satellite sensor design e. mapmaking
Environmental & Atmospheric Sciences