key concept 58.1 Human Activities Are Changing the Biosphere, Resulting in Biodiversity Loss
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Biodiversity has great value to human society
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Diversity loss at one scale affects diversity loss at other scales
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Species diversity is being lost at unprecedented rates
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We can predict the effects of human activities on biodiversity
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key concept 58.2 Most Biodiversity Loss Is Caused by Habitat Loss and Degradation
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Habitat loss and degradation endanger species
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Overharvesting has driven many species to extinction and changed food webs
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Invasive predators, competitors, and pathogens threaten many species
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Species and ecosystems are already being affected by climate change
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key concept 58.3 Protecting Biodiversity Requires Conservation and Management Strategies
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Protected areas preserve habitat and curtail biodiversity loss
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Degraded ecosystems can be restored
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Captive breeding programs can maintain a few species
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Ending trade is crucial to saving some species
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Species invasions must be controlled or prevented
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Biodiversity can be conserved as a consequence of its economic value
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Apply What Youâve Learned
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