TOEFL Independent Sample Answer

Test materials of independent writing: Fossil fuels, such as coal, oil, and natural gas, are used in many countries, while in some countries, the use of alternative sources of energy, including wind and solar power, has been encouraged. Is this trend a positive or negative development?

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 TOEFL Independent Sample Answer - #6049
Question:
Fossil fuels, such as coal, oil, and natural gas, are used in many countries, while in some countries, the use of alternative sources of energy, including wind and solar power, has been encouraged. Is this trend a positive or negative development?
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