Question

The earth began to form around _______________ billion years ago 
1. four and half billion
2.five and half billion
3.three and half billion
4.six and half billion

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Answer 1

Answer:

The earth began to form around five and half billion years ago .

The correct option is 2.five and half billion.

Answer 2

Answer:

four and half billion years ago

Explanation:

I know about it!!