Random question?

The main function of a duck's webbed feet is to help the duck

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What do all animals need in order to survive?

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Many areas of Massachusetts have small deep ponds called kettle ponds. Which of the following best explains the formation of these ponds?

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A hillside along a highway has exposed layers of undisturbed sedimentary rock. Which method would be best for scientists to use to determine the relative age of these sedimentary rock layers?