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Author Question: Because of his Sickle cell anemia, Igor is frequently absent from school. Which of the following is ... (Read 1971 times)


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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

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