Population Growth & Limiting Factors

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What is logistic growth?

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Logistic growth is a model of population growth that occurs when resources are limited, leading to a slowing of growth as the population reaches its carrying capacity.

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NGSS.MS-LS1-5

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What does the S curve represent in population growth?

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The S curve represents logistic growth, where the population grows rapidly at first, then slows as it approaches the carrying capacity.

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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 sustainably support.

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What is the difference between exponential growth and logistic growth?

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Exponential growth occurs when resources are unlimited, leading to a constant rate of growth, while logistic growth occurs when resources are limited, leading to a slowing growth rate as the population approaches carrying capacity.

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What factors can limit population growth?

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Factors that can limit population growth include food availability, habitat space, competition, predation, disease, and environmental conditions.

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NGSS.MS-LS1-5

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How does competition affect population size?

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Competition typically decreases the population size as individuals compete for limited resources.

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NGSS.MS-LS2-1

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What is natality?

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Natality refers to the birth rate of a population, indicating how many individuals are born in a given time period.

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What is emigration?

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Emigration is the movement of individuals out of a population, which can decrease the population size.

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What type of graph represents exponential growth?

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Exponential growth is represented by a J curve, indicating rapid growth without limits.

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What is the role of predators in population dynamics?

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Predators can limit the population size of prey species, helping to maintain balance in ecosystems.

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