Which marine ecosystem has the highest average net primary productivity?
A) Algae beds and coral reefs
B) Estuaries
C) Freshwater swamp and marsh
D) Open Ocean
E) Upwelling zone
A
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You drop a big fluffy pillow from the roof of your building. During its long fall to the ground its acceleration
A. increases. B. remains the same. C. decreases. D. not enough information
Deforestation is the major cause of the increase in atmospheric CO2 content
Indicate whether the statement is true or false.
Monotreme mammals produce an unprotected embryo that undergoes further development in a
pouch. Indicate whether the statement is true or false.
To understand geology one must understand how the solid Earth interacts with water, air, and living organisms. For this reason, it is useful to think of Earth as being part of a ________.
A. system B. formation C. group D. trend E. hydrosphere