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    Exam 5: Nonrenewable Energy and Electricity, Renewable Energy and Energy Conservation, Urban Ecosystems, Waste Management, the Environment and Human Health, and the Environment and You
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    For the Last 100 Years, Our Primary Energy Source Has
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For the Last 100 Years, Our Primary Energy Source Has

Question 148

Question 148

Multiple Choice

For the last 100 years, our primary energy source has been _______.


A) fuel wood
B) fossil fuels
C) natural gas
D) nuclear energy
E) hydropower
For the last 100 years, our primary energy source has been _______. A)  fuel wood B)  fossil fuels C)  natural gas D)  nuclear energy E)  hydropower

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