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Physics, 24.03.2021 22:20 j1theking18

Which is true about UVA and UVB rays? a. Both rays can be blocked 100% by sunscreen.
b. UVA protects the surface, UVB protects beneath the surface.
c. UVB rays cause burning, UVA rays cause premature ageing.
​d. UVA rays cause burning, UVB rays cause premature ageing

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Which is true about UVA and UVB rays? a. Both rays can be blocked 100% by sunscreen.
b. UVA...
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