Despite a low net primary productivity (NPP), which ecosystem or life zone produces the most biomass each year?
A. swamps and marshes
B. tropical rain forest
C. temperate forests
D. open ocean
E. estuaries
Answer: D
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A true difference between north and south polar areas is
A) North Pole is over ocean, while South Pole is over land. B) high pressure is located over North Pole, while low pressure is over South Pole. C) low pressure located over North Pole, while high pressure is over South Pole. D) South Pole is over ocean, while North Pole is over land.
Radiocarbon dating is only useful for organic material
Indicate whether the statement is true or false
The Hadley cell is characterized by
A. high pressure, rising air over the equator, low pressure, sinking air at 30°N and 30°S. B. low pressure, rising air over the equator, high pressure, sinking air at 30°N and 30°S. C. high pressure, sinking air over the equator, low pressure, rising air at 30°N and 30°S. D. low pressure, sinking air over the equator, high pressure, rising air at 30°N and 30°S.
Fire tornadoes may carry fiery debris and drop it miles away, starting new fires, but their wind speeds do not get high enough to register on the Fujita Scale.
Answer the following statement true (T) or false (F)