Edexcel IGCSE Biology 4.16 Sewage Pollution Consequences Topic Practice

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Pearson Edexcel International GCSE Biology

1 The nature and variety of living organisms

(a) Characteristics of living organisms

(b) Variety of living organisms

2 Structure and functions in living organisms

(a) Level of organisation

(b) Cell structure

(c) Biological molecules

(d) Movement of substances into and out of cells

(f) Respiration

(g) Gas exchange

(j) Co-ordination and response

3 Reproduction and inheritance

(a) Reproduction

(b) Inheritance

4 Ecology and the environment

(a) The organism in the environment

(b) Feeding relationships

(c) Cycles within ecosystems

(d) Human influences on the environment

4.12 Air pollution consequences

4.13 Greenhouse gases

4.14 Human sources of greenhouse gases

4.15 Enhanced greenhouse effect

4.16 Sewage pollution consequences

4.17 Eutrophication consequences

4.18B Deforestation effects

5 Use of biological resources

(a) Food production

(b) Selective breeding

(c) Genetic modification (genetic engineering)

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