machine to take out the dirt. For example the petroleum is use to sucked out by
the big pipes. The asphalt road and the clean oil can be the fuel. South china
sea has a big processing plant that produces the oil and natural gas. In late
1980¡¦s, offshore wells produced about 25 percent of the world¡¦s oil and about
20 per cent of the world¡¦s gas. Scientists estimate that 3 trillion barrels of
oil lie undiscovered beneath the ocean. Equally huge amounts of untapped gas
accompany the oil. As gas and oil reserves on land are use up or become too
difficult and expensive to obtain, finding and recovering undersea deposits will
become increasingly important.
The ocean can be use to produce power. First, we have wave power. Generator was
built in the ocean. It has a pumping chamber. It will move up and down to turn
the generator. Second, we have tidal power. The generator will have to build on
the place were water will falls. The best place is to built it on a dam. Once
the dam is full, the water will rush down and it will turn the generator to
produce the energy.
Our ocean is very useful, but we are the one that endangers it with pollution.
The most common pollution is trash and the chemical waste. People go to sea to
fish or to swim they always leave trashes like cans and plastic bag. These
things are not easy to dissolve and if we put them together, oh my god can you
image? That will be