explain three effect of ocean currents
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Answer:
Currents influence the climate of the costal regions. This determines the agricultural and hence all other economic activities of the region. Ocean currents have the following effects:
I. Winds blowing over a warm current become warm and at the same time, pick up moisture, as warm winds are able to retain more moisture. Thus, the wind that reaches the land brings down the temperature and causes heavy rainfall. The western coast of Europe is an example of such a region. Such winds bring down the temperature of the land like the kuroshio (warm) current, which flows along the east coast of Japan.
II. Winds blowing over a cold and dry. They help to bring down the temperatures in places, which would have been much hotter. The California (cold) current, which flows along the western coast of USA, makes the region much cooler than other places in the west coast on the same latitude.
Such winds are bereft of any moisture and bring little or no rainfall over the coastal regions where they blow. As most cold currents flow along the western coast of continents, some of the major deserts are found in such regions. The Atacama desert in South America is influenced by the cold Peru current.
III. Places where cold and warm currents meet are ideal for the growth of Plankton. These are very small organisms, which are food for fish. These regions thus support a great number of fish. They have developed into major fishing grounds of the world. Newfoundland on the eastern coast of North America is the meeting point of the Gulf Stream and the Labrador Current. It is one of the major fishing centers of the world.
However, these places may be dangerous for ships as the meeting of cold and warm currents gives rise to thick fog, which reduces visibility.
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