Complex sentence: The Atlantic Ocean is the second largest of the world's oceans with a total area of about, slightly more than half that of the Pacific Ocean, it covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area.
Split into simpler sentences: The Atlantic Ocean is the second largest of the world's oceans with a total area of about, slightly more than half that of the Pacific Ocean. It covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area.