Chapter 7 Section 1: What Causes Extinction

What is habitat destruction and how does it contribute to extinction?

• Habitat destruction increases the available habitat for species, leading to more food sources, shelter, and breeding grounds, which contributes to extinction.

• Habitat destruction only affects one species in an ecosystem, and does not impact the overall biodiversity, thus not contributing to extinction.

• Habitat destruction reduces the available habitat for species, leading to loss of food sources, shelter, and breeding grounds, which contributes to extinction.

• Habitat destruction has no impact on the available habitat for species, and therefore does not contribute to extinction.

Explain the impact of habitat destruction on biodiversity.

• Habitat destruction only affects a few species and does not lead to extinction.

• Habitat destruction has no impact on the variety of species in an area.

• Habitat destruction increases the variety of species in an area and promotes biodiversity.

• Habitat destruction reduces the variety of species in an area and can lead to extinction.

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How does climate change affect the extinction of species?

• Climate change has no impact on the extinction of species

• Species thrive and adapt better in changing climates caused by climate change

• Extreme weather events caused by climate change have a positive impact on species survival

• Climate change can lead to habitat loss, changes in temperature and precipitation patterns, and increased frequency of extreme weather events, all of which can directly impact species survival and lead to extinction.

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What are the consequences of climate change on ecosystems?

• Promotion of healthy ecosystems

• Increase in biodiversity

• Habitat loss, species extinction, changes in species distribution, and disruption of food webs

• Decrease in global temperature

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What is overexploitation of resources and how does it lead to extinction?

• Overexploitation leads to extinction by increasing the resource's population and diversity, ultimately causing it to thrive in the ecosystem.

• Overexploitation leads to extinction by conserving the resource and promoting its sustainable use, ultimately preventing its disappearance from the ecosystem.

• Overexploitation leads to extinction by reducing the resource's demand and consumption, ultimately allowing it to flourish in the ecosystem.

• Overexploitation leads to extinction by depleting the resource beyond its ability to recover and reproduce, ultimately leading to its disappearance from the ecosystem.

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What are invasive species and how do they cause extinction?

• Invasive species only cause extinction by accident and do not actively compete with native species.

• Invasive species are non-native organisms that cause harm to the environment, economy, or human health. They can cause extinction by outcompeting native species for resources, predation, or spreading diseases.

• Invasive species are native organisms that benefit the environment and promote biodiversity.

• Invasive species have no impact on extinction and actually help native species thrive.

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Explain the effects of invasive species on native ecosystems.

• Invasive species help increase native biodiversity

• Invasive species have no impact on native ecosystems

• Invasive species do not disrupt food chains

• Invasive species can outcompete native species for resources, disrupt food chains, and alter habitats, leading to a decline in native biodiversity.

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What is pollution and how does it contribute to extinction?

• Pollution is the introduction of harmful substances into the environment. It contributes to extinction by destroying habitats, poisoning organisms, and disrupting ecosystems.

• Pollution is the introduction of helpful substances into the environment. It contributes to extinction by promoting biodiversity and supporting ecosystems.

• Pollution is the introduction of neutral substances into the environment. It contributes to extinction by improving air and water quality, and promoting healthy ecosystems.

• Pollution is the introduction of harmless substances into the environment. It contributes to extinction by creating a balanced ecosystem and protecting habitats.

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Discuss the impact of pollution on wildlife and ecosystems.

• Pollution has no impact on wildlife and ecosystems

• Pollution only affects human health, not wildlife and ecosystems

• Wildlife and ecosystems benefit from pollution

• Pollution can cause habitat destruction, water and air contamination, and disrupt food chains.

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Effects of extinction on ecosystems: What happens to the food web when a species goes extinct?

• It can disrupt the food web by affecting the population of other species that depend on it for food.

• It has no impact on the food web

• It only affects the extinct species

• It increases the stability of the food web

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