Disruptions in Ecosystems

Which statements are examples of a disruption to a food web? Choose THREE correct answers.

• overfishing leading to a decline in the fish population

• deforestation causing habitat loss for various organisms

• stable population sizes across all organisms

• hurricane causing temporary disturbance to coastal ecosystems

• conservation efforts to protect endangered species

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What do the arrows in a food web represent?

• population sizes

• energy flow direction

• what eats what

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NGSS.MS-LS2-3

What is an example of a natural disaster in a forest ecosystem?

• clearing land for highway development

• overhunting deer

• tornado uprooting trees

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NGSS.MS-ESS3-2

In a disrupted ecosystem where pollution affects the water quality, what group

of organisms are most likely to be most directly impacted?

• producers

• herbivores

• carnivores

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

What role do decomposers play in a food web?

• capture energy from the sun

• consume primary producers

• break down dead organisms and organic matter

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NGSS.MS-LS2-3

What is the primary source of energy for organisms in a food web?

• sunlight

• herbivores

• decomposers

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is a likely consequence of overpopulation of herbivores, such as deer, in

a forest ecosystem?

• increased biodiversity

• overgrazing and vegetation loss

• decreased carbon sequestration

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

If the population of producers decreases due to a natural disaster, what would

be the most immediate effect on the food web?

• decrease in the herbivore poplation

• decrease in the hawk population

• no change in the food web

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

Humans are causing a decrease in the snake population. What would be a potential consequence for the rest of the ecosystem?

• decrease in the herbivore population

• decrease in the hawk population

• no change in the food web

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2