peni
They get food by the plants and animals living under the water and they get oxygen by the oxygen dissolved in the water
oxygen
Minerals dissolved in aquifers
Nitrogen Oxygen Hydrogen Carbon
The two principal gases that are dissolved in ocean water are oxygen and carbon dioxide. These gases are vital for marine life.
oxygen
oxygen(O2)
Plants
Continental Erosion
They depend on FOOD and DISSOLVED OXYGEN.
Green Plants
Volcanic Outgassing :D