Half of the 20 people on a beach are wearing sunglasses. How many people
are wearing sunglasses? Why do we wear sunglasses?
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Step-by-step explanation:
20/2
= 10 People are wearing sunglasses
during the daylight hours we must wear them because: They protect our eyes against the sun's UV rays, which could otherwise lead to cataracts. They protect against "blue light" from the solar spectrum, which could increase your risk of macular degeneration.
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