Energy flow in an ecosystem is ________
A) bi-directional
B) cyclic
C) semi-conservative
D) top down
E) unidirectional
E
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According to the peripheral model, an urban area consists of an inner city surrounded by:
A) large industrial parks far removed from any residential neighborhoods B) small clusters of suburban malls and run-down shanties (shacks) C) large suburban residential and business areas tied together by a beltway or ring road D) wealthy residential neighborhoods with no access to the inner city E) a beltway of connected roads all leading to small rural areas where the rich live
Increased CO2 in the atmosphere since the Industrial Revolution has resulted in lower surface ocean pH of about ________ pH units.
A. 0.01 B. 5.0 C. 1.0 D. 0.1
A strong negative index for the North Atlantic Oscillation (NAO) usually means that there is ________ of a pressure difference between the Bermuda (subtropical) high and the Icelandic low pressure. This brings ________ than average temperatures over the northern U.S. and northwest Europe
A. less, cooler. B. greater, warmer. C. greater, cooler. D. less, warmer.
Use your knowledge of plate boundaries to answer whether an earthquake is likely or unlikely to occur at the location of the red circle.
A. Unlikely B. Likely