Not a lot! Early life transformed the atmosphere; removing much of the carbon dioxide, so without life Earth would probably have an atmosphere and environment like Venus.
Earth would survive but life would not, except perhaps viruses or bacteria.
If the ozone layer was not present on Earth, all life on earth as we know it would die. This is because the sun is constantly shooting powerful energy at the earth that the ozone helps to protect us from as it filters out harming rays.
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If water disappears from earth then all of life will also disappear. This is because water is essential for life.
If there no sun near by the earth we would freeze to death... Now if there was a sun on earth we would burn
Viking live life
If you believe Christianity, then God created the Earth in a week. Science states that a Big Bang happened, and life evolved from there....
there would be no life on earth because the sun supports life on earth and gives warmth to the living creatures in earth. if the sun was gone, earth would be totally dark and there would be no life there.
Earth has already happened, just look around you!
If there was no ozone, there would be no life. UV is fatal for life on earth.
Nothing would happened to Earth. (that is obvious!)
If the earth had no atmosphere then there would be no life on earth and you would not be there to ask this question!