Extratropical cyclones form between which two types of atmospheric cells?
A) Two Hadley cells
B) A Hadley cell and a Ferrel cell
C) A polar cell and a Hadley cell
D) A polar cell and a Ferrel cell
D
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Continental crust is very buoyant compared with oceanic crust because continental crust is
A) predominantly composed of basaltic rock that contains many air bubbles from successive lava flows. B) predominantly composed of granitic rocks, whereas oceanic crust is composed of basaltic rocks. C) thinner than the oceanic crust, forming a thin upper skin on the oceanic crust below. D) very young and fresh.
The forests in the Upper Peninsula of Michigan from which your text book was made are ________
A) suffer from erosion and heavy pesticide use B) have no mature trees C) harvested using ecosystem-based management D) harvested by clear-cutting E) plantation forests of pine and spruce
The population of the Middle East and North Africa region is approximately
a. 500 million. b. 300 million. c. 700 million. d. just over 1 billion. e. almost 2 billion.
A country is currently creating 40 million tons of toxic waste per year. The table below shows the marginal costs and benefits of reducing the amount of toxic waste to various amounts. What level of toxic waste should the country reduce to?
A. 30 million tons B. 20 million tons C. 10 million tons D. 0 tons