Populations

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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 that live in a specific area and interact with one another.

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What is population density?

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Population density is the number of individuals of a species per unit area or volume.

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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 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 food availability and predation.

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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 or climate.

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Who studies human populations?

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Demographers study human populations, analyzing statistics related to birth, death, and migration.

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What is the difference between immigration and emigration?

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Immigration is the arrival of individuals into a population, while emigration is the departure of individuals from a population.

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What is a biotic factor?

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A biotic factor is a living component of an ecosystem that affects the population, such as predators, prey, and competitors.

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What is an abiotic factor?

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An abiotic factor is a non-living component of an ecosystem that affects the population, such as temperature, water, and soil.

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What is a trophic level?

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A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients from producers to consumers.