Primary Succession: 1. No previously existing life, 6. Starts as the result of a volcano or receding glacier, 10. Starts on bare rock, 11. Lichens break down rock, 12. Happens relatively slow, Secondary Succession: 5. Starts as a result of a forest fire or flood, 7. Previously existing life, 9. Starts with previously existing soil, 13. Happens relatively fast, Both: 2. Plants and animals adapt, 3. Comes after a natural disaster, 4. Climax community, 8. Pioneer species, 14. Gradual growth,

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