Populations and Resources

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What is a population in ecology?

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A population is a group of individuals of the same species living in a specific area at the same time.

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What factors can cause a population to increase?

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A population can increase if more individuals are born than die.

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What factors can cause a population to decrease?

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A population can decrease if more individuals die than are born.

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NGSS.MS-LS2-4

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What is the role of predators in an ecosystem?

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Predators help control the population sizes of prey species, maintaining balance in the ecosystem.

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NGSS.MS-LS2-4

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What is a food chain?

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A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

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NGSS.MS-LS2-3

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What is a food web?

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A food web is a complex network of interconnected food chains in an ecosystem.

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

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What happens to a prey population if its predator population decreases?

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If the predator population decreases, the prey population is likely to increase due to reduced predation.

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NGSS.MS-LS2-2

NGSS.MS-LS2-4

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What is carrying capacity?

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Carrying capacity is the maximum number of individuals of a species that an environment can support sustainably.

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NGSS.MS-LS2-4

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How do resources affect population size?

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The availability of resources such as food, water, and shelter directly influences population size and growth.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

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What is competition in ecology?

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Competition occurs when individuals or populations vie for the same resources in an ecosystem.