Understanding Biodiversity and Its Threats

What is biodiversity?

• The variety of life in a particular habitat or ecosystem

• The number of species that have gone extinct

• The process of species evolving over time

• The study of ecosystems

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Which of the following is a consequence of introducing invasive species to an ecosystem?

• Increased biodiversity

• Disruption of local food chains

• Stabilization of the ecosystem

• Decrease in human activity

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How does climate change affect biodiversity?

• It has no effect on biodiversity

• It can lead to habitat loss and species extinction

• It always increases biodiversity

• It only affects marine life

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Describe how seasonal variations can lead to changes in ecosystems.

• They cause permanent changes in species

• They lead to temporary changes in resource availability

• They have no impact on ecosystems

• They only affect plant life

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How does the origin of new species increase biological diversity?

• By reducing the number of existing species

• By adding new genetic variations and species to ecosystems

• By causing the extinction of other species

• By maintaining the status quo of ecosystems

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What is the natural process that decreases biological diversity?

• Evolution

• Extinction

• Speciation

• Migration

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Explain how human activity can lead to a loss of biodiversity.

• By creating more habitats for species

• By polluting environments and destroying habitats

• By increasing the number of species

• By promoting conservation efforts

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Evaluate the role of competition in shaping ecosystems.

• It leads to the extinction of all competing species

• It helps maintain balance by regulating population sizes

• It has no impact on ecosystems

• It only affects plant species

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Discuss how the introduction of a new species can lead to changes in an ecosystem.

• It always increases biodiversity

• It can disrupt existing relationships and lead to competition

• It has no impact on the ecosystem

• It only affects the food chain

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Predict the long-term effects of a significant loss of biodiversity in an ecosystem.

• Increased stability and resilience

• Decreased ecosystem services and resilience

• No change in ecosystem function

• Immediate recovery and balance

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