The Effects of Changes on Populations

What is the term for a change that is temporary and not too severe?

• Permanent change
• Severe change
• Gradual change
• Transient change

By collecting evidence, we can construct solid arguments about the impacts of changes on ______.

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NGSS.MS-LS2-4

NGSS.MS-LS2-1

What is one reason why it's important to gather evidence about the impacts of changes on ecosystems?

• To make predictions about the future of ecosystems
• To prove that humans are responsible for climate change
• To support political agendas
• To make money

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NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-5

Can populations recover from major changes in their ecosystem, and if so, how? Yes, populations can sometimes recover from major changes, but it often depends on the nature and extent of the ______.

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NGSS.MS-LS2-4

NGSS.MS-LS4-4

What is an example of a biological change that can affect an ecosystem's populations?

• Introduction of a new predator
• Alterations in precipitation patterns
• Physical destruction
• Temperature changes

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NGSS.MS-LS2-4

What is an example of a physical change that can affect an ecosystem's populations?

• Spread of disease
• Increased competition for resources
• Alterations in precipitation patterns
• Introduction of a new species

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NGSS.MS-LS2-4

What is the relationship between evidence and conclusions in science?

• Conclusions are independent of the evidence we have
• Conclusions are based on intuition rather than evidence
• Evidence is not important in science
• Conclusions are always tied to the evidence we have

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NGSS.MS-LS2-4

NGSS.MS-LS1-5

NGSS.MS-PS1-2

What might scientists infer if they observe a sudden decrease in a deer population following a particularly harsh winter?

• Deer populations are not affected by weather
• The deer population is likely to increase in the future
• The decrease in the deer population is due to hunting
• Severe weather can negatively impact the deer population

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NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS1-5

The introduction of a new species could lead to increased competition for resources, or it could introduce new ______.

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NGSS.MS-LS2-4

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What is empirical evidence?

• Data collected through intuition
• Data collected through speculation
• Data collected through hearsay
• Data collected through direct observation or experimentation

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NGSS.MS-LS2-1

NGSS.MS-PS1-2

NGSS.MS-PS3-4