Approximately how many years ago was the earth formed?
A) 4.5 billion years ago
B) 2.5 billion years ago
C) 4.5 million years ago
D) 2.5 million years ago

Name: Approximately how many years ago was the earth formed? A) 4.5 billion years ago B) 2.5 billion years ago C) 4.5 million years ago D) 2.5 million years ago
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It is believed that the Earth was formed 4.5 billion years ago. Scientists believe that this age is ? the age of the universe.

Approximately How Many Years Ago Was the Earth Formed