7.2 Biodiversity Loss and Extinction Review

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What is background extinction?

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Background extinction refers to the gradual process of species becoming extinct one by one, rather than a sudden loss of many species.

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What does it mean when a species is classified as 'threatened'?

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A 'threatened species' is one that is likely to become endangered in the near future.

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What classification indicates that a species is at serious risk of extinction?

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The classification 'endangered' indicates that a species is at serious risk of extinction.

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What are the implications of the term '6th mass extinction'?

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The term '6th mass extinction' refers to the current high rates of extinction that have increased tremendously, indicating a significant loss of biodiversity.

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How does overharvesting impact biodiversity?

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Overharvesting puts animal and plant species at risk of extinction, thereby reducing biodiversity.

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What is biodiversity?

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Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the diversity of species, genetic variation, and ecosystem diversity.

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What are some causes of biodiversity loss?

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Causes of biodiversity loss include habitat destruction, climate change, pollution, overexploitation, and invasive species.

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What is the difference between endangered and threatened species?

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Endangered species are at serious risk of extinction, while threatened species are likely to become endangered.

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What role do invasive species play in biodiversity loss?

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Invasive species can outcompete native species for resources, disrupt ecosystems, and lead to declines in native biodiversity.

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How does climate change contribute to biodiversity loss?

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Climate change alters habitats and ecosystems, making it difficult for some species to survive, leading to increased extinction rates.