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1. 1

   Core Idea

   Source 1 · Page 2

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2. 2

   Core Idea

   Source 2 · Page 10

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3. 3

   Food Relationships

   Source 3 · Page 10

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4. 4

   Food Relationships

   Source 4 · Page 11

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5. 5

   World Habitats

   Source 5 · Page 12

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6. 6

   World Habitats

   Source 6 · Page 17

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7. 7

   World Habitats

   Source 7 · Page 19

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8. 8

   World Habitats

   Source 8 · Page 21

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9. 9

   Toxic Food Chains

   Source 9 · Page 24

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10. 10

    Toxic Food Chains

    Source 10 · Page 26

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11. 11

    Toxic Food Chains

    Source 11 · Page 28

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12. 12

    Toxic Food Chains

    Source 12 · Page 29

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13. 13

    Invasive Species

    Source 13 · Page 32

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