Some coral reefs off the east coast of South America are starting to die off. Satellite images reveal great plumes of sediment washing out of the mouths of rivers. What can you conclude, if anything, about the relationship between these two factors?
A. Although the two factors coincide, they are not likely to be related.
B. Deforestation on land results in lower oxygen levels in the atmosphere, which stresses the reef.
C. Deforestation on land allows erosion to wash away topsoil, which smothers reefs.
D. Burning of the rain forest increases atmospheric carbon dioxide to levels toxic to reefs.
Answers: 1
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Sally, age 3 months, has a moist, red, vesicular rash on her cheeks, the backs of her hands, and her arms. her mother said sally was constantly trying to scratch the rash and often has difficulty sleeping. her father has a family history of allergic rhinitis and asthma. discussion questions. 1. review atrophic dermatitis from chapter 3 and discuss the pathophysiology of sally’s symptoms. 2. why is the father’s medical history significant, and what can sally expect as she grows up? 3. discuss the need to limit scratching, and describe practical methods to achieve this.
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