The Palaeozoic era starts at ____ million years ago and ends at ____ million years ago.

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Question:
  
The Palaeozoic era starts at ____ million years ago and ends at ____ million years ago.

1. 500, 100

2.570, 225

3.470, 150

4. 470, 225

Posted Date:-2021-03-07 10:15:41

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