Rates of primary productivity in the open ocean are about the same as ________.

A. intensive agriculture regions
B. deserts and grasslands
C. rainforests
D. pastures


Answer: B

Environmental & Atmospheric Sciences

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High grading can be defined as ________

A) a forest that has been largely unaffected by humans B) artificially or naturally reforested areas C) the loss of biodiversity of forest areas D) the natural frequency and severity of fires in a forest E) removal of particular species of trees for fuel and construction

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Adiabatic processes are only important for air:

A) that is polluted. B) which is rising or sinking. C) that is stagnant. D) masses which remain near the earth's surface. E) that is saturated.

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A dark gray cloud that blankets the sky and often generates precipitation is called

What will be an ideal response?

Environmental & Atmospheric Sciences

What are the four primary methods of separating ore minerals from nonvaluable minerals? What will be an ideal response?

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