For life to be possible on earth, these things must exist.
For life to be possible on earth, there must be these four things, these are the factors that make life possible on earth.
1. Food, this is in various forms and consumed differently by different organisms.
2. Water, this is the main content of fluids in all living things.
3. Air, which is exchanged and absorbed in various forms.
4. Light, which is used as a source of solar energy and many other forms by different organism.
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