Mass Extinctions

What is one of the impacts of mass extinctions on biodiversity?

• Increase in the number of species

• No change in the diversity of life

• Loss of biodiversity due to the disappearance of numerous species

• Increase in the overall diversity of life on Earth

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How do mass extinctions affect ecosystems?

• They have no significant impact on ecosystems

• They create stable food webs

• They lead to cascading effects on food webs and ecosystem services

• They increase the resilience of ecosystems to change

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What opportunities can arise from mass extinctions?

• Decrease in the number of ecological niches

• Opportunities for new species to evolve and adapt to vacant ecological niches

• Reduction in evolutionary adaptations

• Elimination of all evolutionary opportunities

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What is known as the "Great Dying"?

• Cretaceous-Paleogene Extinction

• Permian-Triassic Extinction

• Devonian Extinction

• Ordovician-Silurian Extinction

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Which geological signatures mark the Permian-Triassic Extinction event?

• Extensive layers of sedimentary rock and limestone deposits

• Extensive layers of volcanic rock and coal deposits

• Extensive layers of ice and glacial deposits

• Extensive layers of sandstone and shale deposits

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When did the Cretaceous-Paleogene Extinction occur?

• 160 million years ago

• 66 million years ago

• 200 million years ago

• 100 million years ago

What are human activities such as habitat destruction, pollution, and climate change driving?

• An increase in biodiversity

• A decrease in pollution levels

• An unprecedented rate of species extinction

• Improved climate conditions

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According to the graph titled "Species Extinction and Human Population," how has the trend of extinctions and human population changed over time?

• Both extinctions and human population have decreased

• Extinctions have decreased while human population has increased

• Both extinctions and human population have increased

• Extinctions have increased while human population has decreased

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This is the worst mass extinction in history.

• Permian-Triassic Extinction

• Cretaceous - Tertiary Extinction

• Ordovician - Silurian Extinction

• Late Devonian Extinction

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It was also referred to as the "Great Dying".

• Permian-Triassic Extinction

• Late Devonian Extinction

• Triassic - Jurassic Extinction

• Holocene Extinction

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