Match the following six geological events from the column on the left with its corresponding best approximate date in the right-hand column by writing the correc etter beside the numbers listed. Each date can be used only once. 5. Asteroid hits the earth, leading to the extinction of the dinosaurs 4. Humanity spreads across the planet 1. Permian mass extinction event 2. Oxygen collects in the atmosphere 3. First organisms (bacteria) appear 1. 65 mya 2. 590 mya 3. 251 mya 4. 2200 mya 5. 140 mya 6. 3600 mya 7. 200 mya 8 10.000 va

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