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| Practical 36.1 Investigation of air quality in different locations | | |
| Practical 36.2 Designing an investigation to study lichen distribution as an indication of air pollution | | |
| Practical 36.3 Comparison of the oxygen content in clean water and polluted water samples using a data logger | | |
| Practical 36.4 Designing an investigation to study water pollution in a freshwater stream or a shore habitat | | |
| Effects of global warming | | |