Net Primary Productivity is highest in ____.
A. open oceans as nutrients are plentiful
B. open oceans as disturbance is minimized
C. shallow systems as nutrients are plentiful
D. shallow systems as temperatures are cooler
E. open oceans as sunlight is plentiful
Answer: C
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In the winter, when water use is low, precipitation ________ evapotranspiration
A) equals B) is below C) exceeds D) fluctuates between exceeding and equaling E) fractuates between equaling and below
There are three major problems associated with the use of the Colorado River's water, including ____.
A. frequent flooding B. water disputes between the United States and Canada C. overflowing reservoirs D. subsidence E. the fact that the Colorado River basin includes some of the driest areas in the United States
IPCC scientists argue that where possibly dangerous, irreversible, or catastrophic events are involved, policy should be based on the __________ __________, which states adverse events should be preempted by action
Fill in the blank(s) with correct word
By 2.7 billion years ago, rocks formed that contained _________ indicating that well before that life existed that could _________.
Fill in the blank(s) with the appropriate word(s).