One hundred units of coal energy are converted to electricity, which is then used to power an incandescent light bulb that produces 1.2 units of light energy. This results in a 1.2% ________

A) energy return on investment
B) energy conversion
C) energy conversion efficiency
D) consumption
E) energy end-use efficiency


Answer: E

Environmental & Atmospheric Sciences

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Factors involved in soil formation are ________

A) erosion, leaching B) frequent wildfires, wind, temperatures above 100 degrees Fahrenheit C) seasonal changes in tides, earthquakes D) nitrogen-fixing bacteria, grazing by herbivores, tropical storms E) weathering of parent material, freezing/thawing, tree roots

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Which of these species is the most prone to extinction?

A. grizzly bear B. human C. rat D. cockroach

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The maximum amount of a pollutant that a body of water can support without reducing water quality below acceptable levels is represented by ________

A) total maximum daily levels B) total minimum daily loads C) water quality D) total maximum daily loads E) total minimum daily levels

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The word that describes the relationship between geography and international relations is ________

A) Geopolitics B) International geography C) Globalization D) Geo-foreign policy

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