Which of the following is not a factor contributing to desertification?
A) overgrazing
B) no-till agriculture
C) salinization
D) climate change
B
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When catching a fast-moving baseball with your bare hand, you extend your hand forward to allow the ball to ride backward with your hand. The catching force is thereby reduced because the
A. time of the catch is decreased. B. relative velocity is less. C. time of catch is increased. D. relative velocity is greater.
Which of these is NOT one of the four Earth systems?
A) ozonosphere B) lithosphere C) atmosphere D) biosphere E) hydrosphere
The movement of European-American middle-class families to the suburbs in order to escape racial tensions and urban decay is called what?
A) White flight B) Caucasian departure C) European suburbanization D) Suburban gentrification
Water temperatures in the northern Pacific Ocean vary from warm to cool due to the ____
a. Pacific decadal oscillation b. Arctic oscillation c. North Atlantic oscillation d. El Niño e. La Niña