Multiple Choice
Which statement about ultraviolet radiation is true?
A) It's best to avoid outdoor activity in the late afternoon,because the sun's rays are most intense after 3 P.M.
B) Swimming is a good choice of outdoor activity,because ultraviolet rays cannot penetrate water.
C) Sand reflects ultraviolet radiation,so beach-goers need to wear sunscreen even if they sit under a beach umbrella.
D) Sunscreen is not needed at high elevations because the atmosphere at high altitude filters out most ultraviolet radiation.
Correct Answer:
Verified
Correct Answer:
Verified
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