3.1-3.4 APES

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What is a K-selected species?

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A K-selected species is one that produces fewer offspring but invests more time and resources into raising them, typically found in stable environments.

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What is carrying capacity?

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Carrying capacity is the maximum number of individuals in a population that the available resources can support before growth is halted.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

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What happens when a population reaches its carrying capacity?

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When a population reaches its carrying capacity, its growth levels off and transitions from exponential growth to logistic growth.

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NGSS.MS-LS2-4

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What are generalist species?

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Generalist species are organisms that can adapt to a wide range of habitats and have varied diets.

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What are specialist species?

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Specialist species are organisms that have specific diet and climate requirements, making them less adaptable to changes in their environment.

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Define exponential growth in populations.

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Exponential growth occurs when a population increases rapidly due to abundant resources, leading to a J-shaped growth curve.

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NGSS.MS-LS1-5

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Define logistic growth in populations.

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Logistic growth occurs when a population's growth rate decreases as it approaches the carrying capacity, resulting in an S-shaped growth curve.

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What are density-dependent factors?

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Density-dependent factors are environmental factors whose effects on a population change as the population density changes, such as competition and predation.

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NGSS.MS-LS2-4

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What are density-independent factors?

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Density-independent factors are environmental factors that affect populations regardless of their density, such as natural disasters and climate.

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What is the difference between r-selected and K-selected species?

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R-selected species produce many offspring with little parental care, while K-selected species produce fewer offspring with significant parental investment.

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NGSS.MS-LS4-4