According to cosmozoic theory, life comes on earth from other planets in space in the form of
Spores
Seeds
Gametes
All of these
'Panspermia’ is used for transfer of these from one planet to other.
The atmosphere became oxidising with the appearance of
Replacement of original hard parts or even the soft tissues of the organisms by minerals is known as
Assertion : The earliest fossil form in the phylogeny of horse is eohippus.
Reason : Eohippus lived during the early pliocene epoch.
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