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Question

In which era mammals and birds evolved?

A
Mesozoic
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B
Cenozoic
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C
Palaeozoic
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D
Precambrian
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Solution

The correct option is B Cenozoic
The birds and mammals evolved during the Coenozoic (new life) era. The decline of reptiles allowed diversification of birds and mammals.
So, the correct answer is 'Cenozoic'

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