More guides on this topic

• Organisation of an ecosystem - Edexcel
• Biodiversity & the effect of human interaction on ecosystems - Edexcel
• Natural cycles and decomposition - Edexcel
• Sample exam questions - ecosystems and material cycles - Edexcel

Related links

• Combined Science exam practice
• Combined science revision
• Personalise your Bitesize!
• Jobs that use Science
• BBC: Science and Environment
• Save My Exams Subscription
• Quizlet
• Tassomai Subscription
• Headsqueeze
• Revision Buddies Subscription