Posted: November 17th, 2017

A camp nurse is applying sunscreen to a group of children enrolled in swim classes. Chemical sunscreens are most effective when applied:

A camp nurse is applying sunscreen to a group of children enrolled in swim classes. Chemical sunscreens are most effective when applied:

a. Just before sun exposure
b. 5 minutes before sun exposure
c. 15 minutes before sun exposure
d. 30 minutes before sun exposure

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