Most ocean water is located in which zone? surface zone transition zone deep zone mixed zone

What is thought to have caused the mass extinction at the end of the cretaceous period?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .