12.A. Five examples of alternative energy sources are solar energy, wind energy,
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Question
12.A. Five examples of alternative energy sources are solar energy, wind energy, hydroeletric energy, biomass energy and geothermal energy
12. B. Renewable energy which is obtained from natural processes and are continuously restocked or replenished. For examples, sunlight, geothermal heat, wind, tides, water, and biomass. Alternative energy source is used as an alternative of using fossil fuels.
12.C. The follwing reasons make people to be skeptical about the use of certain renewable energy sources:
1. Cost: the cost of alternative energy sources is 5-10 times greater than that of fuel energy sources.
2.Alternative energy source has lower efficiency to produce energy and electricity compare to the fossil fuel sources.
Explanation / Answer
12. Understanding that fossil fuels are crea sources of fuel. a. Give five examples of alternative energy sources b. One particular class of alternative energy sources are the renewable fuels. What does it mean for an energy source to be renewable? Give three examples e. What are some of the issues that cause people to be skeptical about the use of certain types of alternative energy sources? ting environmental problems, we are developing other arit leal elass of large molecules in living systems. ^
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