NGSS.MS-LS2-1

Use the diagram to answer the question.
The trout is a source of food for the human and the eagle. When there are more than one organism vying for the same source we call this____?

• Population
• Resources
• Community
• Competition

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NGSS.MS-LS2-1

A rainforest area is experiencing a severe drought. As a consequence, the insect population has decreased. What will the insect-eating birds most likely do as a result of the drought?

• stop searching for food until it begins to rain
• begin reproducing to increase population
• move to a new area to find food
• start the process of hibernation

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NGSS.MS-LS2-1

Largest number of individuals of a population that the environment can support...  

• carrying capacity
• population crash
• lag phase
• mutualism

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NGSS.MS-LS2-1

In this food chain, what will happen if the frogs become extinct?

• The snakes will increase.
• The grasshoppers will decrease.
• The eagles will remain the same.
• The grasshoppers will increase.

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NGSS.MS-LS2-1

How has global warming made it more difficult for polar bears to hunt the seals they feed on?

• The population of seals has declined.
• Polar bears are forced to swim longer distances between ice sheets.
• Seals now have more places to hide.
• Polar bears are now being hunted more by other predators.

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NGSS.MS-LS2-1

This figure shows three warblers with different niches in a spruce tree habitat.  The warblers are feeding in different areas of the tree which allows them to avoid _

• competing with one another for food
• establishing a strict territory from one another
• creating a symbiotic relationship with one another
• caring for their young by supplying food

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NGSS.MS-LS2-1

A mouse population lives in an area with limited resources. The main predators of the mice leave the area. What will happen to the mice population?

• It will continue to increase as long as there are no new predators in the area.

• It will decrease to a certain level, then stay the same.

• It will increase to certain point, then stay the same

• It will increase forever

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NGSS.MS-LS2-1

Scientists have been studying the size of three populations in a region. In this ecosystem, lions eat wild pigs, and wild pigs eat frogs. The data showed that all three populations were stable. Then the frog population decreased suddenly. What will likely happen to the size of the wild pig population as a result?

The size of the wild pig population will . . .

• increase

• stay the same

• decrease

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NGSS.MS-LS2-1

Which of the following would INCREASE the carrying capacity of an ecosystem?

• increase in predators
• disease
• increase in available food
• drought

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NGSS.MS-LS2-1

Owls and snakes eat mice and other organisms. What would happen to the mice population if the owl population decreased?

• The population would decrease, as the loss of owls as part of their diet is a limiting factor.

• The population would decrease, as shelters created by owl nests is a limiting factor.

• The population would increase, as competition for food is a limiting factor.

• The population would increase, as predation by owls is a limiting factor.

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NGSS.MS-LS2-1