| 11. | Ecovillages offer small-scale communities with minimal ecological impact or regenerative impacts as an alternative.
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| 12. | The ecological impact of " B . viollaceus " in this region remains unknown.
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| 13. | However, the ecological impact causes a net loss to society,
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| 14. | Environmental organisations have raised concerns about the ecological impacts on the river's biodiverse ecosystems.
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| 15. | "That's one of the reasons the ecological impacts are so severe, " he said.
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| 16. | The negative societal impacts described in this section were all caused by negative ecological impacts.
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| 17. | The negative ecological impact of such industrial exploitation in the Pechora Sea coast is significant.
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| 18. | The scale of the ecological impact may affect the siting and operation of wind turbines.
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| 19. | That natural event supplies food for many people but its ecological impact can be devastating.
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| 20. | The Koreshans had a major ecological impact on the river when they were living there.
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