Which of the following is NOT true about alternative sources of energy?
A. Ethanol is mostly produced from corn and sugar cane, which can also be foods.
B. Biomass energy can involve burning scrap wood and methane from landfills.
C. Using solar energy requires a large investment in photovoltaic panels and other infrastructure.
D. Fuel cells use oxygen and hydrogen as a fuel.
Answer: C
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A. benzene B. mercury C. toxic lead D. copper
Marble is an example of a metamorphic rock. Indicate whether the statement is true or false
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