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Cycles within ecosystems
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Why ecosystems recycle materials

Why ecosystems recycle materials

An ecosystem includes living organisms and the non-living conditions around them, such as soil, water and air. Organisms need elements such as carbon and nitrogen to build carbohydrates, fats and proteins.

Cycles within ecosystems Lesson

  1. IGCSE
  2. /Biology
  3. /Cycles within ecosystems

Step-by-step lessons covering Edexcel IGCSE Biology Cycles within ecosystems for IGCSE Biology. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Start with the foundational cell biology and core content before moving on to the more data-heavy ecology, genetics and practical-skills topics, which carry a large share of the exam marks.