Question

how did the world start ? with full explanation​

Answer 1

Answer:

its too long but in short

Explanation:

by big bang

Answer 2

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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