The net dry weight of all organic material in an ecosystem is known as
A) net primary productivity.
B) biomass.
C) net photosynthesis.
D) compensation point.
B
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In a dry climate with cold winters, this grain would least likely be cultivated
A) rice B) wheat C) barley D) oats E) jatropha
Open sea bilge pumping and tank cleaning are legal ways to clean ships, once the ship is at least 300 miles offshore.
Answer the following statement true (T) or false (F)
According to the three-cell general circulation model, the driest regions on Earth should be found near:
a. The equator and 60 deg latitude. b. The equator and 30 deg latitude. c. 30 deg latitude and the polar regions. d. 30 deg latitude and 60 deg latitude.
A rise in sea level is likely to cause greater coastal erosion
Indicate whether the statement is true or false