Answer the following question given this paragraph: Steam rises from the cooling towers of this nuclear power plant. The steam is only harmless water vapor. Unlike a power plant that burns fossil fuel, a nuclear power plant doesn't release pollution into the air. That's because a nuclear power plant produces power by nuclear fission, a type of nuclear reaction. Q: What is harmless water vapor, for a powerplant? Choices: - wind - plasma - fog - steam A:
steam
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Answer the following question given this paragraph: Combustion reactions involve the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide. Q: What involves the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide? Choices: - hydrogen reactions - chemical reactions - material reactions - combustion reactions A:
combustion reactions
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Answer the following question given this paragraph: Q: Catenulids typically reproduce asexually by budding where? Choices: - their anterior end - their neuronal end - their analogous end - their posterior end A:
their posterior end
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Answer the following question given this paragraph: A low level of radiation occurs naturally in the environment. This is called background radiation. It comes from various sources. One source is rocks, which may contain small amounts of radioactive elements such as uranium. Another source is cosmic rays. These are charged particles that arrive on Earth from outer space. Background radiation is generally considered to be safe for living things. Q: What is the low level of radiation that occurs naturally in the environment called? Choices: - temperature radiation - neon radiation - consequence radiation - background radiation A:
background radiation
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