NGSS.MS-LS2-4

What would happen if the population of hawks suddenly increased? How would it affect the other organisms in the ecosystem?

• The snakes would decrease due to more hawks eating them
• All of the population of organisms would increase
• The biotic factors in the ecosystem would increase
• The hawks predators would decrease

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NGSS.MS-LS2-4

Which is an example of a biotic factor?

• The sun
• Water
• Grass
• Rocks

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NGSS.MS-LS2-4

If the prey population decreases, the predator population ________

• Increases
• Decreases
• Stays the same

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NGSS.MS-LS2-4

Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice
• The hawks eat more dark mice than light mice because the dark mice taste better
• The hawks eat more light mice than dark mice because they can see the light mice more easily
• The hawks eat more dark mice than light mice because they can see the dark mice more easily

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NGSS.MS-LS2-4

If the grasshopper were to be removed completely from the food web, what organism would be most affected?

• The squirrel

• The shrew

• The deer

• The rabbit

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NGSS.MS-LS2-4

Humans have an effect on ecosystems when they use native grasslands or forested areas for farming or urban use. One negative effect of these changes on the ecosystem is that there will be

• Less biodiversity

• More homes

• Successful economic growth

• Increased food production

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NGSS.MS-LS2-4

Which would most likely result from an oil rig in the Gulf of Mexico that begins to leak crude oil?

• The leaking oil would permanently damage or destroy the ecosystems of the Gulf.

• The water would easily dissolve the leaking oil before any damage could be caused.

• The leaking oil would easily be cleaned up and no damage would be done to the Gulf.

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NGSS.MS-LS2-4

In the forest spotted owl make their home in the cavities of dead trees. The same habitat is home to rodents that owls feed on. Logging by humans have caused the population of owls to decline. What statement BEST explains the relationship between humans and the spotted owl.

• humans have taken away resources needed by owls, so there are fewer owls.

• Humans increased the available food for the owls, so there are more owls.

• Humans eliminated predators of the owls, so the owls increased.

• Humans moved the owls to the zoo, so there are less owls in the woods.

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NGSS.MS-LS2-4

In our Amplify story, what is the problem we are trying to solve?

• Why are there so many different species living in Glacier Sea?

• How has climate change affected Glacier Sea?

• Why is the moon jelly the only type of jelly in Glacier Sea?

• Why did the population of moon jellies in Glacier Sea mysteriously increase?

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NGSS.MS-LS2-4

The environmental changes at the very end of the Devonian period significantly impacted shallow warm waters. Which community of species living at the time would have been most impacted?

• small mammals

• freshwater tetrapods

• terrestrial plants

• fish and corals

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NGSS.MS-LS2-4