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Humans have intellect and mind, so they are encouraged to always learn a variety of objects, including the earth.
In addition to his great curiosity, humans also need natural resources from the earth. Both the biological, or non-biological to maintain their survival.
Therefore, they began to learn about what, how, and when the earth was formed.
The experts continue to conduct other research-terrestrial research that often bore ideas about the earth.
There are many versions about the opinions of how and when the earth was formed.
The process of formation of the earth.
One theory that will be discussed is a theory which states that "the earth was made up from layers of gravity (destiny layering) of a blob of dust mixed with gas dew constantly moving twister in the universe".
Due to the continuous movement that attract particles are then collected and bound together.
Heavy particles, will be collected on the inside, because of the influence of gravity. which later formed the core of the earth.
While the lighter particles will be collected in the middle and the outside. Which then form the sheath mantle and crust. The geologists, also believes that the earth was formed 4.6 billion years ago. That means, the earth that we live in has about 4.6 billion years old.
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