Light travels at a speed of approximately
A) 340.29 meters per second (1,116.44 feet per second)
B) 80,500 kilometers per hour (50,000 mph).
C) 1,000,000 kilometers per second (621,371 miles per second).
D) 150,000 kilometers per hour (93,206 mph).
E) 300,000 kilometers per second (186,333 miles per second).
E
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The greenhouse gas nitrous oxide, which you may know as laughing gas from your most recent visit to the dentist, has the chemical formula
A) NOx. B) N2O. C) NO2. D) NO
A spinning cloud of interstellar gas tends to
A. condense. B. disperse. C. turn into a sphere. D. flatten.
The models of ecological economists focus on
A. resource conservation, sustainable economic development, and full-cost pricing. B. eliminating the national debt while maintaining government subsidies. C. maximizing the flow of matter and energy resources. D. minimizing the costs associated with pollution by whatever means necessary. E. minimizing the flow of matter and energy resources.
Where warm, moist, unstable mT air seldom penetrates, such as along the west coast of the United States
A) there are many thunderstorms B) there are very few thunderstorms C) there is no humidity in the air D) there is an excess of humidity in the air