Q: What layer high in the atmosphere protects living things from most of the sun’s harmful uv rays?


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

Earth’s atmosphere is vital to life. The atmosphere provides the oxygen and carbon dioxide living things need for photosynthesis and respiration. Living things also need the ozone layer high in the atmosphere. Upper level ozone protects them from most of the Sun’s harmful UV rays.

 Choices:

- Mesosphere

- troposphere

- stratosphere

- ozone layer


A:
ozone layer