The U.S. EPA estimates that recycling and composting in the United States in 2010 reduced emissions of climate-changing carbon dioxide by an amount roughly equal to that emitted by 36 million ____.
A. hydraulically fractured gas wells
B. barrels of oil
C. tons of coal
D. passenger vehicles
E. power plants
Answer: D
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Explain briefly why upper-level winds at middle latitudes in the northern hemisphere blow from west to east. In what direction do upper-level winds at middle latitudes in the southern hemisphere blow?
What will be an ideal response?
Self-interest policy is to ________ as rational choice is to cost-benefit approaches.
A. Diverse and separate interests B. Altruism C. Fairness D. Power E. Science-based management
The early atmosphere of Earth probably did not contain ____
a. nitrogen b. oxygen c. carbon dioxide d. carbon monoxide e. sulfur dioxide
What is the name for slow, deep currents beneath the pycnocline?
A) Surface currents B) Convection currents C) Thermohaline currents D) Polar currents