The Earth began to form around years ago.
The Earth began to form around years ago.
(A) 13.7 billion
(B) 1,07,200
(C) 4 1/2 billion
(D) 6 billion
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The Earth began to form around years ago.
(A) 13.7 billion
(B) 1,07,200
(C) 4 1/2 billion
(D) 6 billion