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ID number:258075
Evaluation:
Published: 18.11.2003.
Language: English
Level: Secondary school
Literature: n/a
References: Not used
Extract

Earth has a lengthy and intricate history. The changes that occur are two slow for people to be conscious about. Awareness of the theory of evolution is quite fresh, yet we have made a lot of progress. We will start our journey through the Earth's evolutionary timeline from nearly 5 billion years ago. Earth and nine additional planets revolve around the sun. Our researchers have reasons to believe that all the planets in our solar system formed at the same time.
About 5 billion years ago a huge cloud of gasses consisting of hydrogen and helium began to gravitationally contact, forming into a flat disk shaped material called the protosun (pre-Sun).

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