Which of the following describes how electricity is generated from waste in a landfill?
Waste is burned directly to produce steam that drives a turbine.
Landfill waste is converted into coal, which is then burned for energy.
Aerobic bacteria in the landfill directly produce electricity through biochemical reactions.
Methane gas from decomposing waste is captured and burned and used to generate electricity.
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What is the primary benefit of recycling solid waste materials?
It eliminates the need for waste management facilities.
It reduces global demand for minerals by reusing materials.
It completely eliminates the need for mining new resources.
It is a cost-free process that requires no energy.
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Which of the following is a drawback of the recycling process?
It is energy-intensive and can be costly.
It leads to an increase in mineral extraction.
It produces more waste than it eliminates.
It has no impact on reducing environmental harm.
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Which of the following best describes a drawback of composting?
It increases landfill waste and pollution.
It produces odor and can attract rodents.
It prevents organic matter from decomposing properly.
It releases toxic chemicals into the soil.
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The average landfill in the United States contains approximately 146.1 tons of waste and burns landfill gas, or methane. to produce electricity. If 0.06 tons of landfill gas is produced per ton of municipal solid waste landfilled, how much landfill gas is emitted by the average landfill in the United States?
8.8 tons
35.6 tons
146.0 tons
2435.2 tons
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A recycling facility processes 500 metric tons of e-waste per year. If the average concentration of mercury in e-waste is 200 gram per metric ton of waste, how much mercury is present in the e-waste processed annually?
0.01 metric tons
300 grams
100,000 grams
10 metric tons
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