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Standard H.E.2A

H.E.2A Earth is a tiny part of a vast universe that has developed over a huge expanse of time. At the center of Earth’s solar system is one local star, the Sun. It is just one of a vast number of stars in the Milky Way Galaxy, which is just one o...

Grade(s): 9, 10, 11, 12

Subject(s): Science

Year: 2014

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