how long ago did oceans begin to form? 12.5 mya 137 mya 285 mya 3800 mya
Oceans on Earth began to form about 3,800 million years ago (3.8 billion years ago) , so from the options given, the correct answer is 3800 MYA.
Oceans on Earth began to form about 3,800 million years ago (3.8 billion years ago) , so from the options given, the correct answer is 3800 MYA.