what are the conditions for the possibility of life on the earth?
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Requirements for life
Energy
Warmth to allow liquid water to exist (or liquid methane)
Energy is needed to fuel chemical reactions (metabolism)
Complex Chemistry
Elements heavier than Hydrogen & Helium
Carbon as building blocks for complex organic molecules
Protection from harmful UV radiation
UV light can damage or break complex molecules, causing mutations that may inhibit the emergence of complex life.
Protection from UV is afforded by the Ozone Layer, underwater, or underground
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