B2 Population and pollution 0.0 / 5 ? BiologyPollution, Population and pollution, Measuring pollutionGCSEOCR Created by: Nicole10Created on: 24-11-15 18:29 Three pollutants that have caused much concern are... 1) Carbon Dioxide 2) CFCs 3) Sulphur Dioxide 1 of 14 What produces carbon dioxide and what does it cause? From increased burning of fossil fuels -> may increase the greenhouse effect and global warming 2 of 14 What produces CFCs and what does it cause? From aerosols -> they destroy the ozone layer 3 of 14 What produces sulphur dioxide and what does it cause? From burning fossil fuels -> causes acid rain 4 of 14 Exponential growth is when... The human population of the world is growing at an ever-increasing rate 5 of 14 Carbon footprint is... The amount of pollution caused per person or organisation 6 of 14 What does the carbon footprint measure? The total greenhouse gas given off by a person within a certain time 7 of 14 What is a direct method of measuring pollution? Oxygen probes attached to computers that measure exact levels of oxygen in a pond 8 of 14 What is another direct method of measuring pollution? Special chemicals can indicate levels of nitrate pollution from fertilisers 9 of 14 Indicator species for clean water... Mayfly larva 10 of 14 Indicator species for polluted water... Water louse / Bloodworm / Mussels 11 of 14 Indicator species for clean air... Lichens (grows on trees) 12 of 14 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 13 of 14 Advantages of direct methods... 1) More accurate results 2) At any specific time 14 of 14
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