Of the total solar energy reaching the Earth, ________ percent is fixed by photosynthesis

A) 80
B) 40
C) 20
D) 10
E) less than 1


Answer: E

Environmental & Atmospheric Sciences

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U.S. population reached 300 million by the year 2000

Indicate whether the statement is true or false

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Rocks that were formerly part of Laurentia are now mostly in ____

a. North America b. South America c. Europe

d. Africa e. Antarctica

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When clay minerals in a shale are subjected to elevated temperature and pressure, they may change in the solid state (that is, without melting) to form platy minerals like ________ that are at equilibrium with the new temperature/pressure conditions.

A. carbonate B. mica C. amphibole D. pyroxene E. feldspar

Environmental & Atmospheric Sciences

What you choose to buy as a consumer does not really influence businesses to produce eco-friendly goods and services.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences