Geology of the Oceans. Did we always have oceans?_____. Have they changed ?___________ Oceans formed between 4.2-3.8 billion years ago Water vapor escaping from crust condensed on surface http://www.youtube.com/watch?v=hwVU0-2Qnso&safety_mode=true&persist_safety_mode=1.
Do oceans change?___ how?_____________
Bordered by Africa,
drive continental movement
absence of sunlight