In general, coral reef ecosystems are ________
A) not heavily fished because fishing gear often becomes entangled and damaged by the reefs
B) recovering quickly from human-caused damage because corals grow quickly
C) in critical condition in the Caribbean, but healthy elsewhere
D) sensitive to pollution and decreasing ocean pH
D
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The textile and apparel industry accounts for about 6 percent of the dollar value of world manufacturing
Indicate whether the statement is true or false.
Soil ________ refers to the ease with which soil particles can be moved by wind or water
Fill in the blank(s) with correct word
Desert landforms referred to as fans can be made by _____
a. streams and debris flows b. salt weathering and the wind c. dune migration and rockfall d. groundwater evaporation and weathering e. solution and abrasion
Mass-transit systems include all of the following EXCEPT ________
A) taxicabs B) commuter rail C) subways D) light rail E) buses