Answer :
The events that caused the oceans to form are as the earth cooled, water condensed and the sun released a strong burst of water vapor.
How oceans are formed?
Oceans are formed millions of years ago when the water drained into the great hollows on the Earth's surface, the primeval ocean came into existence.
These two events are responsible for the formation of the oceans which is the primitive habitat of the aquatic ecosystem.
Therefore, the events that caused the oceans to form are as the earth cooled, water condensed and the sun released a strong burst of water vapor.
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