The Atlantic Ocean, the second youngest of Earth's five oceans,originated 130 million years ago when the Americas separated from Africa and, as Earth's plates continue to move, has been expanding ever since.
A) originated 130 million years ago when the Americas separated from Africa and, as Earth's plates continue to move, has been expanding --- The best; originated is correct tense; has been expanding denotes that the feature started in the past and is continuing ever since in the present and
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A) originated 130 million years ago when the Americas separated from Africa and, as Earth's plates continue to move, has been expanding --- The best; originated is correct tense; has been expanding denotes that the feature started in the past and is continuing ever since in the present and
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