Dynamic and Resilient Ecosystems

If the populations of grasshoppers would decrease, what affect would that have on the population of lizards?

• Increase

• Stay the same

• Decrease

• Unable to determine

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If the population of rattlesnakes were to decrease, why would that help to increase the population of hawks?

• Rattlesnakes eat hawks

• Hawks eat rattlesnakes

• Rattlesnakes and hawks both eat kangaroo rats.

• It would not help the hawk population.

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Characterized by constant change, activity, or progress.

• Dynamic

• Matter

• Disruptive

• Mass

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What do you think would happen to the ecosystem if the mice were removed?

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Both the lion and the cheetah eat some of the same prey in this ecosystem. Two organisms going after the same resource is known as

• Mutualism

• Parasitism

• Competition

• Commensalism

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NGSS.MS-LS2-1

A system that includes all living organisms (biotic factors) in an area as well as its physical environment (abiotic factors or nonliving things) functioning together as a unit.

• Population

• Catastrophic

• Species

• Ecosystem

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Coyote populations have been increasing in recent years. Which would not be a reason for their increase?

• More food is available

• Less competition from other predators

• Less available habitat to live in.

• Less threat of being hunted by humans

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NGSS.MS-LS2-1

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Which of the following best describes a dynamic ecosystem?

• An ecosystem that remains unchanged over time

• An ecosystem that adapts and evolves in response to environmental changes

• An ecosystem with a fixed number of species

• An ecosystem that is isolated from human influence

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What is resilience in the context of ecosystems?

• The ability of an ecosystem to resist changes

• The ability of an ecosystem to recover after a disturbance

• The ability of an ecosystem to expand its territory

• The ability of an ecosystem to produce more biomass

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Which of the following is an example of a resilient ecosystem?

• A forest that regrows after a wildfire

• A desert that remains dry and barren

• A coral reef that bleaches and does not recover

• A lake that becomes polluted and stays polluted