?How do we pollute our environment
اسلاید 1: How do we pollute our environment?List 5 ways
اسلاید 2: Air pollution – can you think of any examples?
اسلاید 3: Water pollution – can you think of any examples?
اسلاید 4: Land pollution – can you think of any examples?
اسلاید 5: Impact on the Carbon CycleList as many ways that human activity may disrupt the Carbon CycleUse your cycle diagram to help youDiscuss
اسلاید 6: What are fossil fuels?Fossil fuels are hydrocarbons, primarily coal, petroleum, fuel oil and gas. They formed from the fossilised remains of dead plants and animals by exposure to heat and pressure in the Earths crust over hundreds of millions of years
اسلاید 7: What’s the problem?The burning of fossil fuels by humans is the largest source of emissions of carbon dioxide, which is one of the greenhouse gases that contributes to global warming. This means that the surface temperature of the Earth will rise in response.
اسلاید 8: Fossil Fuels
اسلاید 9: What can we do?List at least 5
اسلاید 10: Indicator species:Looking at Lichens Lichens are the crusty organisms that grow in places such as on rocks and bricks. You can also find them on gravestones and the side of trees. They range in colour from grey-green to orange and red.
اسلاید 11: LichensSulphur dioxide gas is produced when fuels like coal and oil are burned. Some lichens are very sensitive to air pollutionIn areas of low air pollution:-a large variety of different lichen species-lichens tend to be big and fluffyIn areas of high air pollution:-very limited variety of lichen species-lichens tend to be small and crustyWe can use lichens as an indicator species.Explain what you think an indicator species is!
اسلاید 12: This powerpoint was kindly donated to www.worldofteaching.comhttp://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.
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