Question

complete the sentences to explain why scientists were concerned about the use of cfcs. uvc waves break down chlorofluorocarbons in the stratosphere. as the amount of chlorofluorocarbons in the stratosphere increases, the number of ozone molecules will. as a result, uv waves can pass through the ozone layer and reach earths surface.

Explanation:

CFCs broken down by UVC release chlorine atoms, which catalytically destroy ozone molecules, reducing their count. The ozone layer absorbs most UVB and UVC; with less ozone, more UVB (the harmful type that reaches the surface) penetrates.

Answer:

1. decrease
2. UVB