Q: More uv rays reach the ground due to a decrease in what layer in the stratosphere?


Read this paragraph and choose the correct option from the provided answers:

With less ozone in the stratosphere, more UV rays reach the ground. More UV rays increase skin cancer rates. Just a 1 percent loss of ozone causes a 5 percent increase in skin cancer. More UV rays also harm plants and phytoplankton. As a result, they produce less food. This may affect entire ecosystems.

 Choices:

- troposphere

- smog

- gases

- ozone


A:
ozone