YES!!! They are by name, Atlantic, Pacific, Indian, and Arctic.
Yes, they do exist on Earth.
Because oceans exist at the lowest points on the planet.
There are areas of some oceans that are devoid of life but there are no deserts in oceans.
fish
Oceans generally do not have leeches. Leeches exist within marshes or swamps, which is their main habitat.
Oceans just exist, they have no intended 'job'.
if they exist probably in a cave or the bacteria live in oceans
No Globigerina still exist in the earths oceans.
No oceans border the Soviet Union, as it no longer exists. When the Soviet Union did exist, the Pacific Ocean and the Arctic Ocean both bordered it.
ecosphere
Lobsters are not extinct. They exist in all oceans and can be found along the ocean floor.
ecosphere
yes, land was formed inside of the water. Slowly the land moved apart making room for rivers by taking away water from the oceans.