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Ocean Resources 13.4

Ocean Resources 13.4. Living Resources. People depend on living ocean resources Fish and other marine organisms(lobsters, oysters, shrimp, crabs, scallops, etc.) are gathered from the ocean to feed humans

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Ocean Resources 13.4

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  1. Ocean Resources 13.4

  2. Living Resources • People depend on living ocean resources • Fish and other marine organisms(lobsters, oysters, shrimp, crabs, scallops, etc.) are gathered from the ocean to feed humans • Fish and other marine life are being raised in ocean farms to help feed growing human population and to prevent over fishing. • Kelp and other seaweed and algae provide atmospheric oxygen through photosynthesis • Seaweed also provides products which help in food preparation

  3. Nonliving Resources • Oil and natural gas deposits are from marine micro -organisms that died and were deposited in ancient sea floors hundreds of millions of years ago. • Humans are dependant on these nonrenewable resources that are used faster than they can be replenished. • Sound(seismic) waves are used to locate deposits in rock layers.

  4. Desalination • Drinkable water is made from ocean water through the process of desalination. • Ocean water is piped to a desalination plant and filtered to remove algae and small particles. • Water is forced through a semi-permeable reverse osmosis membrane at very high pressure, which strips off the salt molecules and only lets water molecules through. • It takes massive amounts of energy and is very expensive to complete this process. • Less than 1% of the world’s water is supplied through desalination.

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