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The sum of all chemical reactions in the human body is known as

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Jonny climbed an apple tree. How are Jonny and the apple tree similar to each other?

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The orbit of Earth is almost circular and has a period of about 365 days. Compared to the orbit of Earth, which of these objects usually have highly elliptical orbits and can have periods of over 1000 years?

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Evidence suggests that there is a relationship between ancient dinosaurs and modern birds. Through time, each occurrence of a new trait most likely resulted from which of the following?