aharris aharris

14-12-2016
Mathematics

contestada

What's the recommend amount of UV protection that sunglasses should provide?

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Аноним Аноним

14-12-2016

They should screen out 99 to 100 percent of uv rays. Hope this helps!

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Аноним Аноним

14-12-2016

Sunglasses that block 100 percent of the harmful UV and have good optical quality.

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