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Scenario
Corn crops are susceptible to damage by different species of corn borer, an insect (a type of arthropod) that feeds and lives on corn plants. It is estimated that corn borers may cause up to $1 billion of damage a year to corn crops. Because of pests like the corn borer, researchers have created genetically modified pest-resistant crops. One type of pest-resistant crop, Bt corn, expresses a bacterial toxin that kills corn borers if they consume the toxin. While Bt corn has been planted and used in the United States since 1996, some researchers and members of the public continue to worry about negative effects of the Bt toxin on other animals, including arthropods and humans. In order to investigate the effects of Bt toxins on other animals, researchers conducted experiments where they fed arthropods Bt corn or non-Bt corn. A summary of the effects of eating Bt corn on single species of corn borer, mite, and beetle are shown in the figure below.
-One of your local newscasters sees these data and announces on the news that "Bt toxins are safe because they have no negative effects on any arthropods except for the corn borers." Do you agree with that statement?
Munchausen Syndrome
An extreme and long-term form of factitious disorder in which a person produces symptoms, gains admission to a hospital, and receives treatment.
Risk Factors
Variables or conditions that increase the likelihood of a negative outcome, such as disease or psychological disorders.
Lesions
Abnormal changes in body tissues caused by disease or injury, which can be any size, shape, and located on or within the body.
Stomach
A muscular, hollow organ in the gastrointestinal tract of humans and many animals, where digestion of food begins.
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