How did the components of the earth come together to form the planet?
Answers
When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust.
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Earth and the whole galaxy was created due to a big bang. The earth was first a sphere of fire which cooled down slowly. First the outer layer called lithosphere was formed. Then some micro- organisms were able to sustain in the atmosphere. Then life started. First period was of prokaryotes which had not well defined organals and nucleus. The they evolved by time and become eukaryotes. Evolution was done more ahead and now we can see todays earth.