Ecology and Diversity

Globally, the leading cause of biodiversity loss is 

• invasive species
• poaching and overharvesting
• pollution
• habitat change and loss 

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NGSS.HS-LS2-7

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Scientists think people have directly caused the extinction of some species through ______________.

• habitat destruction
• poaching
• pollution
• All of these

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NGSS.HS-LS2-7

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Biodiversity refers to

• extinct species
• the variety of species on Earth
• nonrenewable resources
• the rate of species decline

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NGSS.MS-LS2-5

Which of the following is an example of a biotic  component of the environment?

• wind
• vegetation
• water
• temperature

Which level of biodiversity includes  the available habitat in an area?

• Species diversity
• Genetic diversity
• Ecosystem diversity
• All of these

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NGSS.MS-LS2-5

Some species are so important to the functioning  of an ecosystem that they are called

• keystone species
• cornerstone species
• essential species
• exotic species

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NGSS.MS-LS2-4

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A species that is NOT native to a particular region is called

• natural
• invasive
• endemic
• extraordinary

You are a conservation biologist and have been assigned the task of conserving an endangered species. Based on your knowledge, which of the following steps would be your first priority in protecting the species?

• Reduce pollution in the area
• Captive breeding
• Conserve the species’ habitat
• Introduce a species to eat the predators of the endangered species

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NGSS.HS-LS2-7

Exotic or invasive species leads to all of these problems except

• increased biodiversity
• loss of biodiversity
• disease
• loss of native species

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NGSS.HS-LS2-2

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Which of the following is NOT a benefit of greater biodiversity?

• water pollution
• crop protection
• better ecosystem health
• ecotourism

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NGSS.MS-LS2-5