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Assignment title; How polluted is the environment?

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1 Assignment title; How polluted is the environment?
Task 1: How we affect the ecosystems: P4 P5 M3 D2 Task 2: Recycling – is this the answer, and is it working?: P6 M4 D3

2 Explain the long-term effects of pollutants on living organisms and ecosystems.
Distinction Analyse the effects of pollutants on ecosystems Merit Describe the impact that different human activities have on ecosystems. Pass Describe how living and non-living indicators can be used to measure levels of pollutants.

3 Demonstrate an understanding of the effects of human
activity on the environment and how these effects can be measured

4 You are an environmental scientist working for a local community group and the group has recently been concerned about different areas of the local community. There have been reports about the River Thames which runs through the area looking green and foamy in places, and suggestions that some local industries and farmers are not being as careful as they should be with some of the things they are doing. You have been asked to write a report for the next meeting.

5 You should be able to: explain the effects of an increasing human population on the environment.

6

7 Challenge Look at the picture. The picture shows how humans are polluting the Earth You have 30 seconds to look at the picture Describe what you see You now have 30 seconds to look at the picture Look at your partner’s picture and add extra information to your own Get students into groups of four and give them A4 plain paper. They must not bring the paper up with them. You can get one team member to assess the team work skills of the others. 7

8 A report that includes a description of the short and long term effects of human activity activities on the environment and the organisms within it.

9 Make sure you give at least one long term effect for each
How human activities affect the environment through: Deforestation- effect on the soil, climate and survival of plants and animals Agriculture (farming) – effects of eutrophication and pesticides on animals and plants Transportation of food and for travel – what causes acid rain and the effects of acid. Effects of pollutants on health Make sure you give at least one long term effect for each

10 deforestation

11 Teacher notes This five-stage animation illustrates the process of eutrophication. Suitable prompts could include: Why do fertilisers make algae grow? Increased amount of algae will reduce the amount of sunlight reaching plants. What effect will this have? What will happen to the dead plants? Why will bacterial decomposition of plants affect fish and other animal life in the lake?

12 Effects of eutrophication
Effects of eutrophication

13 Eutrophication Eutrophication is: Picture Key statement

14 Effect of pesticides

15 Effects of the excessive use of DDT from the early 1940s.
Effects of the excessive use of DDT from the early 1940s.

16 Rabbit Fox Stoat Cabbage

17

18 Effects of transportation
Effects of transportation

19

20 Boardworks GCSE Science: Chemistry Fossil Fuels and the Environment
Acid rain

21 Explain how acid rain is formed using all these key words
Vehicles Sulphur dioxide Air Dissolves Water vapour Clouds Sulphuric acid Acid rain Limestone buildings and statues Aquatic animals Chlorophyll Photosynthesise Explain how acid rain is formed using all these key words

22 Explain the long-term effects of pollutants on living organisms and ecosystems.
Distinction Analyse the effects of pollutants on ecosystems Merit Describe the impact that different human activities have on ecosystems. Pass Describe how living and non-living indicators can be used to measure levels of pollutants.

23 Living indicator species in water
Heading is: Living indicator species in water

24 Water pollution indicators - clean
Freshwater shrimps Stonefly

25 Water pollution indicators – very polluted
Bloodworm Sludge worm

26 A living indicator is a living organism whose presence indicates the state of the environment
A non- living indicator is a non living thing that is used to indicate the state of the environment

27 You are an environmental scientist working for a local community group and the group has recently been concerned about different areas of the local community. There have been reports about the River Thames which runs through the area looking green and foamy in places, and suggestions that some local industries and farmers are not being as careful as they should be with some of the things they are doing. You have been asked to write a report for the next meeting.

28 The River Thames runs through Gravesend.

29 Gravesend marshes Tottenham marshes Buckland Lake Reserve

30 Boating at the Waterside centre on the River Thames

31 Species Site A Site B Site C Site D Stonefly nymph 15 Mayfly nymph 22 Freshwater shrimp 1 3 5 16 Caddis fly larva 4 6 11 Water louse 2 Blood worm Sludgeworm 7 Rat-tailed maggot

32 Task 1 for you to complete
Look at the species found at each site a long the River Thames. What conclusions can you draw from this? Look at the site locations – do they provide further explanation for your conclusion? Write a report explaining what living indicators are and how they can be used to find out about the water quality of the River Thames at the different sites. Explain how you have came to your conclusions

33 Non-Living indicators
You should be able to: explain how scientists use non-living indicators as evidence to assess the level of pollution in water Heading is: Non-Living indicators

34 Monitoring the environment
Boardworks GCSE Science: Biology Measuring Environmental Change Monitoring the environment Teacher notes Students may have experience of oxygen monitors being used as a pulseox monitor in a hospital, in a fish tank or data logging equipment in school. Photos: weather station © 2011 (Natali Glado), Shutterstock.com rain gauge © 2011 (Kevin Carden), Shutterstock.com light meter © 2011 (Dennis Steen), Shutterstock.com pH meter © 2011 (Radu Razvan), Shutterstock.com nitrate probe © 2011 (Bork), Shutterstock.com thermometer © 2011 Photos.com Datalogger: © Sciencephoto.com Pondweed in aquarium tank B808/1457 An aquarium tank containing sprigs of pondweed (Elodea sp.) with a digital oxygen sensor and portable data collecting device. Oxygen bubbles on the side of the tank are the result of photosynthesis. The computer interfaced sensor is monitoring changes in dissolved oxygen over time as a result of the plant's photosynthetic activity. Elodea is a genus of closely related aquatic plants native to North America. They are important producers in pond ecosystems, and are used widely in home aquariums and school experiments. Some species have been introduced to Europe, Africa, Australia and other areas where they are considered a noxious, invasive species. 34

35 Nitrate levels in water
Site A Site B Site C Site D Oxygen levels in water (mg/L) 3 8 2 6 Nitrate levels in water 3.0 1.2 3.1 1.6

36 Task 1 for you to complete
Explain what we mean by non-living indicators. Add to you report about what the levels of oxygen and nitrate in the river tells us about the water quality of the River at the different sites. Look at the site locations – do they provide further explanation for your conclusion?

37 Air pollution indicator species
You should be able to: explain how scientists use living indicator species as evidence to assess the level of pollution in the air Heading is: Air pollution indicator species

38 Lichens – sensitive to sulphur dioxide and are killed by this gas
Air pollution indicators Lichens – sensitive to sulphur dioxide and are killed by this gas

39

40 Number of different varieties of
Site A Site B Site C Site D Number of different varieties of lichens 2 5 3

41 Task 2 for you to complete
Look at the number of different varieties of lichens found at each site a long the River Thames. What conclusions can you draw from this? Look at the site locations – do they provide further explanation for your conclusion? Write a report on ‘the air quality a long the River Thames’ Explain how you have come to your conclusions. Don’t forget to explain why lichens are called living indicators


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