Part 1 of Essay
The world's ocean covers about 70% of the Earth's surface. It is use to produce us many things. It is more than a place to swimming, sailing and other recreation. serves as a source of energy, raw materials and most of all food like fish and seaweed. In this essay I will talk about "What are our ocean resources and the im ....

Part 2 of Essay
.... are (1) wind-driven circulation and (2) Thermohaline circulation. Wind-driven circulation result from the wind sets the surface waters into motion as currents. The currents generally flow horizontally-that is parallel to the earth¡¦s surface. The wind mainly affects only the upper 100 to 200 meters of water. However, the flow of wind-driven currents may extend to depths of 1,000 meters or more. Thermohaline circulation produces great vertical currents' hat flow from the surface to the ocean bottom and back. The c ....