What is the role of the atmosphere and hydrosphere in the existence of life on Earth?

First of all, both the atmosphere and the hydrosphere are the living environments of living organisms. They provide a variety of climatic conditions on Earth, on which the vital activity of all living things depends. Also, it is worth noting that both of these shells are connected: in particular, ocean currents transport certain air masses, which, in turn, form the climate on the planet. Due to the presence of oxygen in the atmosphere. The earth is suitable for aerobic organisms. Also, the atmosphere contains an ozone layer that reflects most of the ultraviolet rays that are harmful to most organisms. Due to the fact that there is a “blanket” of greenhouse gases in the atmosphere, the cosmic cold does not penetrate the planet. All outer shells of the Earth are connected by the world water cycle, in which water is gradually renewed, it is the water cycle that ensures the preservation of life on Earth. Water is a habitat for some organisms. It was in the hydrosphere that the first life was born and from here began its development. Absolutely all life processes occur in the aquatic environment. Also, water is capable of transforming the relief (ravines; river floodplains, etc.).