AP Environmental Science MCQ AP Environmental Science Chapter 19 A layer of ozone in the lower stratosphere reduces the sun's harmful UV radiation by how much?

A layer of ozone in the lower stratosphere reduces the sun's harmful UV radiation by how much?

Naim 15:40 AP Environmental Science Chapter 19

A layer of ozone in the lower stratosphere reduces the sun's harmful UV radiation by how much?

a. 95%

b. 63%

c. 49%

d. 33%

e. 20%

Answer: A

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