B3: Life on Earth

Notes for the OCR GCSE Biology module: B3 – Life On Earth. These have been made according to the specification and cover all the relevant topics for examination in May/June.

OCR GCSE B3 Notes:

• B3.1 Systems in balance – how do different species depend on each other?
• B3.2 How has life on Earth evolved?
• B3.3 What is the importance of biodiversity?

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