Depending on how you define living. The first things to require outside sources of food, and reproduce happened by chance and good luck. Water is a great mixer, and with all the chemicals from the soil and air mixing together in the water, eventually a random combination turned out to be instructions on how to be living.
After a long time, random chance happened again when one living thing ate another, but instead of processing it for its own food, they formed a relationship to work better. The one who eats, and the one who turns that into energy. That turned into what we would call a cell.
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