Which of the following are renewable energy resources?
A. The sun, the earth's internal heat, and the wind
B. The wind, petroleum, and water
C. Natural gas, the earth's internal heat, and the wind
D. The earth's internal heat, water, and petroleum
E. Water, natural gas, and petroleum
Answer: A
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Liquid, solid, and gas are
A. physical forms of matter. B. chemical forms of matter. C. mixtures. D. compounds. E. forms of energy.
People with home septic systems often flush several cups of a powdered substance down their toilets every month or two to keep their systems healthy. These powdered substances most likely contain
A) bacteria and enzymes that help break down wastes. B) chlorine and other disinfectants that help to prevent soil contamination. C) chemicals that bind to heavy metals to keep them from leaching into the soil. D) acids that help to clean the insides of the walls of the pipes and septic tank.
Like rivers, landforms along shorelines are shaped by the balance between:
A) the temperature of the water and the temperature of the surrounding area B) sediment arriving in a portion of the shore and then being removed from it C) The weight of the sediments in the water and the weight of the sediments arriving D) the speed of the arriving sediments and the ability of the river to generate its own sediments E) the temperature of the sediments arriving and its weight
External costs include ________
A) wages B) utilities C) raw materials D) environmental damage E) worker's compensation and insurance