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Q1: In the United States, fine-particle pollution, mostly
Q3: Burning any carbon-containing fossil fuel releases _
Q4: What percentage of the commercial energy used
Q6: Hydrogen as an energy source only makes
Q16: Which of the following is not a
Q19: A flood happens when water in a
Q27: The direct threat of climate change to
Q31: Natural gas is a good alternative to
Q62: Magma that manages to reach the surface
Q107: If all nations extract metal resources at