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Sourcable Food Rain Forest

Figure 5 The passenger pigeon is an extinct species. These North American birds were over-hunted in the 1800s by frontier settlers who used them as a source of food and feathers.

Describe other causes of extinction.

Figure 5 The passenger pigeon is an extinct species. These North American birds were over-hunted in the 1800s by frontier settlers who used them as a source of food and feathers.

Describe other causes of extinction.

Figure 6 This graph shows five mass extinctions in Earth's history. The mass extinctions appear as peaks on the graph.

Mass Extinctions in Earth's History o

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