The energy that allows tectonic plates to interact on the earth's surface is supplied by:
A. the sun.
B. the molten interior.
C. greenhouse gases.
D. ocean currents.
B. the molten interior.
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What do excess organic wastes and plant nutrients deplete from water?
A. nitrogen B. oxygen C. particulate matter D. minerals E. iron
In water, an increase in salinity results in a(n) ________ in evaporation rate; a(n) ________ in osmotic pressure
a. increase; decrease b. increase; increase c. decrease; decrease d. decrease; increase
Streams can lengthen their drainage courses by the process of headward erosion
Indicate whether the statement is true or false
In the forest, little sunlight is able to penetrate to the ground through the thick crown cover. As a result, ____
a. ?evapotranspiration does not occur near the forest floor b. ?most plant growth is found near the forest floor c. ?little plant growth is found near the forest floor d. ?evaporation from soil does not occur near the forest floor e. ?moisture cannot reach the plants on the forest floor