Question

how the formation of earth

Answer 1

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❇️ In a process known as runaway accretion, successively larger fragments of dust and debris clumped together to form planets. 

❇️ Earth formedin this manner about 4.54 billion years ago (with an uncertainty of 1%) and was largely completed within 10–20 million years.

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Answer 2

Earth is the third planet, counting outward from the Sun, and the beginning stages of its life were violent. During the first eons of Earth's life, it was under continuous bombardment by meteorites and comets. These bombardments helped shape the planet and brought water in the form of ice. They also enriched the Earth with carbon dioxide, methane, nitrogen, and ammonia.

At first, the Earth was extremely hot and much larger than it is now. It was made of rock, different compounds, and dense elements, like solid and liquid iron. As Earth cooled and contracted, the heavier material moved to the center of the Earth to form the core. The liquid material settled over the core to form the mantle. As the Earth cooled more, a solid crust formed over the liquid middle, much like the crust forms on a pan of brownies while the middle is still molten. This is how Earth differentiated into three layers.