| 11. | They seem to occupy a similar ecological niche to hares.
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| 12. | Colonization happened for the same reason any organism migrates-to exploit an available ecological niche.
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| 13. | Bacteria occupy the ecological niche provided by both the tooth surface and gingival epithelium.
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| 14. | It occupies a similar ecological niche to some reed warblers.
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| 15. | They occupy a similar ecological niche to some reed warblers.
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| 16. | This gives them access to a whole ecological niche with minimal competition from other groups.
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| 17. | The emergence of South American organisms is due to the widening of that organisms'ecological niche.
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| 18. | :Yes, it's all about filling a particular ecological niche.
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| 19. | :: Per Graeme, I'm pretty sure this ecological niche is filled by kangaroos and wallabies.
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| 20. | This shows micro-differentiation, as each population of this species has adapted to its ecological niche.
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