First mammals Arrange the above events in chronological order of their origin on the Earth and select the correct answer from the codes given below: Codes:

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3 2 1 4. Arrangement of evolution of organisms in chronological order of their origin on the Earth is as follows: Shelled animals > Insects > Reptiles > Mammals

First mammals Arrange the above events in chronological order of their origin on the Earth and select the correct answer from the codes given below: Codes:

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