4. Extinct volcano – a volcano which has not erupted for many thousands or millions of years
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9. 1. How can a Pyroclastic flow cause damage? 4. What might happen to Planes? 6. What impact would a mud flow have? 2. How would trees be effected? 3. What might happen to the sun? 7. What damage could a lava flow do? 8. What would cause roofs to collapse? 9. What could suffocate you? 5. What might happen to crops?