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Oceans - PowerPoint PPT Presentation


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Oceans. Oceans cover two thirds of the surface of the Earth . There are five oceans on the Earth . They are  - the Atlantic  Ocean, Arctic Ocean, Southern Ocean, Indian Ocean and Pacific Ocean. The ocean is ​​up of salt water . The edges of the oceans are called  seas. ~ Transport.

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oceans

Oceans

Oceans cover two thirds ofthesurface of the Earth. There are fiveoceans on theEarth. They are - theAtlantic Ocean, Arctic Ocean, Southern Ocean, Indian Ocean and Pacific Ocean.

The ocean is ​​up of salt water.The edges of the oceans are called seas.

transport
~Transport

We can sail on rivers, artificial and natural lakes, seas, oceans and man-made navigation channels and canals. Shipping is used for carrying people.

life in the oceans
~Life in theoceans

PLANTS

There are various algae. They ofteninhabit rocky bedrocks. Marine algaeproduceoxygen. Plantsdon't grow deep in the oceans.

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ANIMALS

Typicalanimals in warm and cleanseaareas are corals. When they die, coral reefsarise. The most knownanimals are: sharks, dolphins, medusas and octopus.

water pollution
~Waterpollution

Water pollution is a big global problem.Impactsofthepollutionare different. Peoplereleaserubbish to oceans. Pollutioncango worse by oilaccidents. Every year one hundred thousand marine animals and two million birds die.