The Loss of Large Predators Quiz

What does the word "apex" mean in the context of ecosystems?

• Top level

• Middle level

• Bottom level

• Average level

What is an apex consumer?

• A consumer with many predators

• A consumer with few or no predators

• A consumer that eats only plants

• A consumer that lives in water

What caused a decline in sea otter populations?

• Changes to coastal ecosystems

• Increase in fish populations

• Decrease in seaweed

• Pollution in the ocean

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What happened when sea otters were gone?

• Sea urchin population decreased

• Sea urchin population increased

• Kelp forests grew larger

• Fish populations increased

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NGSS.MS-LS2-1

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What does conservation mean?

• Preserving and protecting Earth

• Destroying natural habitats

• Increasing pollution

• Building more cities

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NGSS.MS-LS2-5

What does Estes believe is necessary for ecosystems to work well again?

• Bringing back top consumers

• Removing all predators

• Planting more trees

• Reducing water usage

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NGSS.MS-LS2-4

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Why can't experiments be done with large predators to see their effects?

• They are too dangerous

• They need a lot of space

• They are too small

• They live in water

What is the main problem caused by the decrease of apex consumers?

• Unexpected problems in ecosystems

• Increase in plant populations

• Decrease in animal populations

• Improvement in water quality

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NGSS.MS-LS2-3

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What is the result of the return of sea otters to coastal ecosystems?

• Healthy kelp forests

• Decreased fish populations

• Increased pollution

• More sea urchins

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What is the main focus of the document?

• The loss of large predators

• The growth of plant populations

• The increase in water quality

• The migration of birds

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