Why Earth atmosphere is important to life?

The atmosphere is important so that we have the ability to live on this planet. As well as other life needs the atmosphere to survive. Gases like Oxygen are required to help Humans and Animals survive and produce energy while it is also needed to produce Carbon Dioxide which is needed to keep plants alive as well. These gases cannot be held on to without an atmosphere. So overall, the atmosphere is needed so that gases can be transportated so that life may continue on. The atmosphere also helps burn up any objects that come to head towards it so that the Earth doesn't take the object's impact as hard as it would without an atmosphere.