Ocean pollution Flashcards

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1
Q

What is point source pollution?

A

The release of pollutants from a single, clearly identifiable location

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2
Q

What is non point pollution?

A

Pollution released from several disposable origins such as exhaust fumes from a ships engine

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3
Q

How many cargos are there and how much sulphur do they emit every year?

A

90,000-100,000 cargos operating 280 days a year, emitting 5000tonnes of sulphur a year

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4
Q

How much of annual sulphur emissions are sea transport responsible for?

A

9%

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5
Q

What are algal blooms?

A

Pollutants such as nitrates and phosphates create a rich soup of nutrients which stimulate algae growth

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6
Q

How does the ocean become full of radio active waste?

A

-people dispose of nuclear waste there
-eight nuclear submarines have sunk which release material

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7
Q

How much waste are humans disposing a year?

A

20billion tonnes

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8
Q

What domestic pollution is in ocean?

A

-sewage containing faeces, urine and laundry waste

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9
Q

What does unwanted sewage do?

A

Promotes growth of pathogens which are disease producing organsims

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10
Q

What is eutrophication?

A

Excessive richness of nutrients in a lake, frequently due to run of from the land, which causes a dense growth of plant life

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11
Q

What happened in Japans Fukushima nuclear plant?

A

Leaked substantial quantities of radioactive material following damage cause by tsunami. It got into food chain so strict ban on catching and consumption of fish.

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