Question

multiple choice question
a decrease in the amount of ______ in the atmosphere means a greater amount of ultraviolet radiation reaches the ground.
carbon dioxide
ozone
nitrogen
methane

Explanation:

Ozone in the stratosphere forms a protective layer that absorbs most of the Sun's ultraviolet radiation. A decrease in ozone allows more UV - radiation to reach the Earth's surface. Carbon dioxide, nitrogen, and methane do not have this UV - absorbing property.

Answer:

B. ozone