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The most difficult areas of unit 2 Biology IGCSE Edexcel summarised. This includes: Animal physiology: 1)Blood and the heart 2) Homeostasis/ Excretion and coordination 3) Breathing and Gas exchange 4) Food and digestion 5) Reproduction

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Biology IAL Edexcel Unit 6 Includes annotations and explanations for all of the core practicals from both AS and A-level needed for the exam as well as past exam questions.