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RE: The Ozone Layer: The Thing Between You and Harmful Ultraviolet Light

in #stemng • 8 years ago (edited)

Beautiful chemistry there. We need to educate more people to preserve the earth the least we can do. Plant a tree or a flower in your surrounding. Thank you for the post.

8 years ago in #stemng by
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     8 years ago 

    Thank you too.

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