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Which of the following would be more likely to pollute a river?

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Pepsin is an enzyme that acts in the stomach for protein digestion. Which of these is most likely the main role of pepsin in this metabolic reaction?

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A boy pulls a sweater off over his head. His hair is attracted to the sweater due to

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In pea plants, tall is dominant over short. What size pea plants will result when a pure tall plant is crossed with a pure short plant?