australia is in the continent of australia it is both a continent and a country note contrary to erroneous opinion it is not in the continent of either aus tralasia or oceania neither of these is a geographical continent but rather they are both political regionst is sometimes referred to as an island continent because it is one of only two continents in the world completely surrounded by water australia is part of the geographic region of oceania which by definition is not actually a continent
So, the colder the water, the more dense it is. Increasing salinity also increases the density of sea water. Less dense water floats on top of more dense water. Given two layers of water with the same salinity, the warmer water will float on top of the colder water.
When fresh water is added for example by rivers, or precipitation, the salinity of the ocean will decrease. That explains why some oceans are less salty than others Factors like the melting of ice, the inflow of river water, rain, snowfall, evaporation, wind, wave motion and currents affect the salinity. cubic foot of seawater contains about 2.2 pounds of salt, but 1 cubic foot of fresh water from Lake Superior contains 0.01 pound of salt, or about one sixth of an ounce. That means sea water is about 220 times saltier than a fresh water lake.