Here's why:

* Ozone layer: The ozone layer in the Earth's stratosphere is a region with a high concentration of ozone (O3).

* UV absorption: Ozone molecules effectively absorb ultraviolet (UV) radiation, specifically the harmful UVB rays that can cause skin cancer and damage to living organisms.

* Protection: This absorption process shields life on Earth from the damaging effects of UV radiation.

While other gases like carbon dioxide and methane also contribute to the greenhouse effect, ozone is specifically crucial for filtering out harmful UV radiation.