2 A2/A-level Biology resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter A2/A-level SubjectClear filter Biology Exam board AQA TopicClear filter gas exchange Resources Flashcards Mindmap Multi-tool Quiz Gas exchange A2/A-level, Biology Quiz gas exchange in plants and insects A2/A-level, Biology Mindmap Search again