On average in the United States, every day each person produces about
A) 10 to 20 gallons of wastewater, containing about a gallon of waste.
B) 50 to 100 gallons of wastewater, containing about three gallons of waste.
C) 150 to 200 gallons of wastewater, containing less than half a gallon of waste.
D) 300 to 400 gallons of wastewater, containing about 10 gallons of waste.
C
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The largest effect that humans have had on the carbon cycle comes from
A. using fertilizers B. building dams C. burning fossil fuels D. polluting the oceans
The most effective method of calculating the rate of tectonic plate movement is to measure the thickness of a rock unit
and divide that thickness by the age of the rocks. a. True b. False
Greenstone belts are dominated by volcanic rocks in the lower and middle parts, and sedimentary rocks in the upper
part. a. True b. False
The main "ingredient" in the formation of coral is ________.
A) nitrogen B) barnacles C) plant roots D) waves E) calcium carbonate