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ruslelena [56]
3 years ago
9

You can put A. B. C. or D.thank you :)​

Biology
1 answer:
fredd [130]3 years ago
3 0

Answer: A

Explanation:

Our universe was born from the Big Bang about 13.5 billion years ago. ... Our solar system began forming about 4.6 billion years ago within a concentration of interstellar dust and hydrogen gas called a molecular cloud. The cloud contracted under its own gravity and our proto-Sun formed in the hot dense center.

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