Ecology and Human Impact Review

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

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

• The squirrel
• The shrew
• The deer
• The rabbit

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NGSS.MS-LS2-1

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Which organism recieves the least amount of energy from the producer?

• Owl
• Grasshopper
• Lilypad
• Mouse

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NGSS.MS-LS1-6

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The mouse in this food web would be considered a:

• Primary Consumer
• Producer
• Tertiary Consumer
• Secondary Consumer

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What is the carrying capacity of the following graph?

• 1000
• 8000
• 800
• 600

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In the year 1865 the rabbit population seems to soar above the lynx (bobcat) population.  What might be a cause for this?

• a disease hit the lynx population
• the rabbits ran out of food
• the lynx may have stopped eating rabbits altogether
• the rabbit population got a disease

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NGSS.MS-LS2-1

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According to the population pyramid of this country, its population is most likely...

• growing slowly.
• growing rapidly.
• decreasing.
• not changing.

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The presence of wastes, such as plastic bags and motor oil, in lakes and streams miles away from developed areas suggests that

• ecosystems are interconnected and human action can alter ecosystem equilibrium.
• recycling programs have failed to conserve biotic resources.
• natural processes can alter ecosystem stability.
• direct harvesting practices have led to irreversible destruction of ecosystems.

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NGSS.MS-ESS3-4

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When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?

• Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.
•  The water becomes better able to support aerobic organisms.
•  The algae provide food for fishes and other organisms, leading to decreased algae populations.
• The extra nitrogen provides additional food for the other organisms, increasing their population.

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NGSS.MS-LS2-1

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A strip mining company wants to lease some land that is currently part of a national park. They promise to reclaim the land should any minerals be mined from the area, and they are willing to pay top dollar for the rights. As an ecologist, what factors would you raise with the local government?

•  the threat to local biodiversity
• management of the land after the company leaves
•  the new jobs that would be created
•  the increased traffic in the area

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NGSS.MS-ESS3-4

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