KEY Mass Extinctions

4 POGIL™ Activities for AP* Biology Model 2 – Diversity of Life 1000 900 800 700 600 500 400 of 300r 200 100 0 542 488 444 416 359 299 251 200 145 65.5 23.5 0 Time (millions of years ago) 12. How is the dependent variable in Model 2 different from that in Model 1? ................
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