GEOLOGY

Detailed explanation-1: -At the present time there is about 60 times as much carbon dioxide (CO2) dissolved in the ocean as in the atmosphere. Because CO2 combines chemically with water to form a weak acid (H2CO3, carbonic acid), water can hold perhaps 1, 000 times more carbon dioxide than either nitrogen or oxygen at saturation.

Detailed explanation-2: -Gases can enter the ocean from streams, volcanoes, organisms, and the atmosphere. Seawater has many different gases dissolved in it, especially nitrogen, oxygen and carbon dioxide.

Detailed explanation-3: -Oxygen enters the ocean in the surface water through contact with the atmosphere. From there the oxygen is then brought to greater depths through the sinking and circulation of water masses. These, in turn, are dynamic processes that are strongly affected by climatic conditions.

Detailed explanation-4: -What is an ocean? An ocean is a continuous body of salt water that is contained in an enormous basin on Earth’s surface. The major oceans and their marginal seas cover nearly 71 percent of Earth’s surface, with an average depth of 3, 688 metres (12, 100 feet).