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 All boards Edexcel TopicClear filter Energy flow through ecosystems Resources Flashcards Mindmap Multi-tool Quiz The carbon cycle IGCSE, Biology Mindmap 4.0 / 5 The Nitrogen Cycle IGCSE, Biology Quiz 2.0 / 5 Search again