B2 Population and pollution

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Three pollutants that have caused much concern are...
1) Carbon Dioxide 2) CFCs 3) Sulphur Dioxide
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What produces carbon dioxide and what does it cause?
From increased burning of fossil fuels -> may increase the greenhouse effect and global warming
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What produces CFCs and what does it cause?
From aerosols -> they destroy the ozone layer
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What produces sulphur dioxide and what does it cause?
From burning fossil fuels -> causes acid rain
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Exponential growth is when...
The human population of the world is growing at an ever-increasing rate
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Carbon footprint is...
The amount of pollution caused per person or organisation
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What does the carbon footprint measure?
The total greenhouse gas given off by a person within a certain time
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What is a direct method of measuring pollution?
Oxygen probes attached to computers that measure exact levels of oxygen in a pond
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What is another direct method of measuring pollution?
Special chemicals can indicate levels of nitrate pollution from fertilisers
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Indicator species for clean water...
Mayfly larva
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Indicator species for polluted water...
Water louse / Bloodworm / Mussels
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Indicator species for clean air...
Lichens (grows on trees)
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Advantages of indicator organisms...
1) Cheap 2) No equipment that may go wrong required 3) Pollution levels can be monitored over long periods of time
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Advantages of direct methods...
1) More accurate results 2) At any specific time
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Other cards in this set

Card 2

Front

From increased burning of fossil fuels -> may increase the greenhouse effect and global warming

Back

What produces carbon dioxide and what does it cause?

Card 3

Front

From aerosols -> they destroy the ozone layer

Back

Preview of the back of card 3

Card 4

Front

From burning fossil fuels -> causes acid rain

Back

Preview of the back of card 4

Card 5

Front

The human population of the world is growing at an ever-increasing rate

Back

Preview of the back of card 5
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