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Q: What do decomposers release when they break down dead organisms? Read this paragraph and choose the correct option from the provided answers: Decomposers release nutrients when they break down dead organisms. Choices: - methane - carbon dioxide - acids - nutrients A:
(Answer)
nutrients

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Q: What causes acid rain, ozone depletion, and global warming? Read this paragraph and choose the correct option from the provided answers: Air pollution consists of chemical substances and particles released into the air, mainly by human actions. The major cause of outdoor air pollution is the burning of fossil fuels. Indoor air can also be polluted. Air pollution, in turn, causes acid rain, ozone depletion, and global warming. Choices: - ozone layer - water pollution - radiation - air pollution A:
(Answer)
air pollution

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Q: What are electromagnetic waves with the longest wavelengths called? Read this paragraph and choose the correct option from the provided answers: Electromagnetic waves on the left side of the Figure above are called radio waves. Radio waves are electromagnetic waves with the longest wavelengths. They may have wavelengths longer than a soccer field. They are also the electromagnetic waves with the lowest frequencies. With their low frequencies, they have the least energy of all electromagnetic waves. Nonetheless, radio waves are very useful. They are used for radio and television broadcasts and many other purposes. You can learn more about radio waves, including how they were discovered, at this URL: http://www. youtube. com/watch?v=al7sFP4C2TY . Choices: - channel waves - sound waves - infrared waves - radio waves A:
(Answer)
radio waves