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B3 Life on Earth

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Follow the links below to take you to resources for each of the biology modules.

How did life on Earth begin and evolve?
How have scientists developed explanations of evolution?
How did humans evolve?
How are our nervous systems organised?
Why do some species become extinct, and does it matter?

General links

B3 summary (word / pdf)

B3 specification (pdf)

BBC Bitesize
OCR specimen exam paper and past papers



16 May, 2009