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Designed for the new specification AQA GCSE( covers spec point 184.108.40.206 ) course but can be modified for other exam boards.
13 slides covering Exchange surfaces.
By the end of the powerpoint students would have covered:
-Why do plants and animals need to have exchange surfaces
-Define the term surface area to volume ratio
-How does the surface area to volume ratio change as the organism gets larger.
-Includes a practical.