Answer:
The change in the ocean's temperature and salinity happens as we move further to the north and south of the equator. The reason for this is the icebergs and massive ice sheets. Icebergs after separating from the glaciers float in the oceans and start to melt. They provide cold and freshwater, lead to a change in the ocean. Antarctica and Greenland are the providers of the icebergs in the world.
Earthquakes usually happen when a plate underground rubs together.
Hope that helps!
Australia and Antarctica are the two countinent completely surrounded by water.
