True or false are all structures made by humans and why

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True or false are all structures made by humans and why

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Cherry 5 months 2021-08-27T20:30:55+00:00 1 Answers 4 views 0

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    1
    2021-08-27T20:32:12+00:00

    Answer:

    mostly. trees and most plants arent

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )