How many known marine species have been catalogued by taxonomists at the World Register of Marine Species?
A) Between 100,000 and 150,000
B) Between 150,000 and 200,000
C) Between 200,000 and 250,000
D) Between 250,000 and 300,000
E) More than 300,000
C
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What will be an ideal response?
Which sea is between Greenland and Canada?
a. Bering Sea b. Beaufort Sea c. Caribbean Sea d. Labrador Sea
The normal percent of water vapor in dry air is ________ percent
A) 0-4 B) 5-10 C) 15-20 D) 25-30 E) 45-50
How is the generation of municipal solid waste likely to change in the next 20 years?
A. Total municipal waste generation will continue at its current rate. B. Per capita generation of waste will continue to decline. C. Total municipal waste generation will decline. D. The answer cannot be determined from the graph.