To provide energy to the body.
An undissolved solute, I believe.
Unlike the hippo's ancestor, whale ancestors moved to the sea and evolved into swimming creatures over a period of about 8 million years. Fossils of gigantic ancient whales called Basilosaurus were first mistaken for dinasaur fossils but were later recognised as mammals.
Are there choices to choose from, because that is a very general question?
I believe your answer would be "Cell division"
DNA replication occurs just before the process of cell division which is also known as mitosis.
Mitosis is when the cell is being divided into two and this is when DNA starts to replicate and it produces more cells and the process goes on and on and no.
Hope this helps. c: