Transcript How do we pollute our environment?

How do we pollute our
environment?
List 5 ways
Air pollution – can you think of any
examples?
Water pollution – can you think of
any examples?
Land pollution – can you think of
any examples?
Impact on the Carbon Cycle
• List as many ways that human activity
may disrupt the Carbon Cycle
• Use your cycle diagram to help you
• Discuss
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 Earth's crust over
hundreds of millions of years
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.
Fossil Fuels
What can we do?
List at least 5
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.
Lichens
• Sulphur dioxide gas is produced when fuels like coal and oil are burned.
• Some lichens are very sensitive to air pollution
• In areas of low air pollution:
-a large variety of different lichen species
-lichens tend to be big and fluffy
• In areas of high air pollution:
-very limited variety of lichen species
-lichens tend to be small and crusty
We can use lichens as an indicator species.
Explain what you think an indicator species is!
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