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According to Darwin's Theory of Evolution, living things evolved over the past billions of years, through mutations and generations.

If some life form split into 2 species 5 million years ago, you get the difference between one kind of money and another kind of money.

If you go back about 50 million years, you get the difference (today) between chickens and ostriches.

If you go back about 2 billion years, you get a much bigger difference in life forms (not just inter-species, but a different form of life altogether, due to the time since the split-off). In that case, you get the difference of plants and animals, and this is just what happened.

About 2 billion years ago, or so, cells had just evolved. Some of them developed the ability to interact with electromagnetic, forming the nervous system in animals today. Those cells that couldn't interact with electromagnetic didn't die off though. They kept up and combated natural selection in a different way. They clung onto the sea floor and turned into plants.

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13y ago

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