Cambridge IGCSE Biology
19Organisms and their environment
Organisms and their environment in Cambridge IGCSE Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Topic106 practice questions5 lessons
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Lessons
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Energy flow and ecological pyramids
20 min
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Food chains and food webs
18 min
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The carbon cycle
18 min
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The nitrogen cycle
18 min
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Populations, communities and ecosystems
20 min
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