In general, coral reef ecosystems globally
A) provide very little ecosystem capital.
B) are in critical condition in the Caribbean, but healthy elsewhere.
C) recover quickly from human-caused damage because corals grow quickly.
D) are sensitive to pollution, physical breakage, and invasive species.
D
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Wind erosion includes both abrasion and deflation. Indicate whether the statement is true or false
The congressional districts of Iowa display
A) "wasted vote" gerrymandering. B) no gerrymandering. C) "stacked vote" gerrymandering. D) "excess vote" gerrymandering.
Rapidly declining crude death rates are found in which stage of the demographic transition?
A) Stage 1 B) Stage 2 C) Stage 3 D) Stage 4 E) Stage 5
What happens as streamflow exits the mouth of a canyon and onto an alluvial fan?
a. the stream widens, but flows at the same velocity b. stream competence stays constant c. stream capacity increases d. the stream erodes more than it deposits e. the stream widens and stream velocity decreases