2 IGCSE Biology resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter IGCSE SubjectClear filter Biology Exam board Edexcel TopicClear filter Animal Physiology Resources Revision Cards Revision Notes Biology - Section B - Animal Physiology IGCSE, Biology Revision notes 5.0 / 5 Biology - Unit 2 - Breathing and Gas Exchange IGCSE, Biology 10 revision cards Search again