It seems that there is only one big ocean in the world, because all oceans flow into each other. But there are five main oceans: Atlantic Ocean, Pacific Ocean, Indian Ocean, Arctic Ocean, and Antarctic Ocean. Pacific Ocean is the largest and deepest ocean, covering about one-third of the Earth's surface. Atlantic Ocean is the … Continue reading How Many Oceans?
Earth formed about 4.54 billion years ago from a cloud of rock, dust, and gas surrounding the newly formed sun. Gravity pulled this space debris together to form a sphere, which eventually melted and developed a layered structure of metal and rock. This structure then cooled down, finally becoming cool enough to support liquid oceans … Continue reading From “Dead As a Rock” to “Brimming with Life”