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Poison ivy is a weed that grows in New York State. It synthesizes (makes) an oil, urushiol, that causes skin rashes. Researchers have found that if poison ivy grows in an environment that contains an increased concentration of carbon dioxide, the plants grow larger, faster, and produce more urushiol. Because carbon dioxide levels in the atmosphere are rising, poison ivy might become a hazard to people who work or vacation outdoors. identify the independent variable
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Poison ivy is a weed that grows in New York State. It synthesizes (makes) an oil, urushiol, that cau...
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