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  • Uploader Uploaded by: Caribbean.Shark
    Date Added Added: 6mo ago
    Duration Runtime: 18 min 53 sec
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  • Description
    Around 400 BC, the ancient Greeks organized the worldly elements into four groups: air, water, earth, and fire. In the seventeenth century, Robert Boyle explained the material world in terms of elements, mixtures, and compounds 

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