how the earth formed?
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by breaking down of sun particle and cooling
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Answer:
After formation slowing living organisms emerged firstly as unicellular and then slowly evolved according to changing conditions
Explanation:
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.
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