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Why do scientists believe that the earliest life forms most likely lived in the oceans?


Chemicals could not react to form complex molecules without water.


Early Earth did not have an ozone layer.


The land would have been too cold for life to form there first.


All life relies on water.

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Erudite1
The correct option is this: EARLY EARTH DID NOT HAVE AN OZONE LAYER
Scientists believe that earliest life forms could not have survived on the earth surface because the atmosphere then lacked oxygen and there is no ozone layer to block the harmful radiations of ultraviolet light.

Early Earth did not have an ozone layer.

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