Biosphere Unit Exam review

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What is a biotic factor?

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A biotic factor is a living component of an ecosystem, such as plants, animals, and microorganisms.

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What is an example of a biotic factor in the Monteverde Cloud Forest?

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Plants are a biotic factor visible in the Monteverde Cloud Forest.

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What is the simplest level of organization that ecologists study?

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The simplest level of organization that ecologists study is the population, not the community.

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What is urban sprawl?

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Urban sprawl refers to the uncontrolled expansion of urban areas, which can lead to increased carbon dioxide emissions.

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How does urban sprawl increase carbon dioxide emissions?

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Urban sprawl increases carbon dioxide emissions by increasing the need to drive.

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What is a density dependent factor?

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A density dependent factor is a factor whose effects on the size or growth of a population vary with the population density.

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What is an example of a density dependent factor in Yellowstone National Park?

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The number of elk and other prey species is an example of a density dependent factor affected by the reintroduction of wolves.

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What is logistic growth?

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Logistic growth is a pattern of population growth that starts exponentially but slows as the population reaches its 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 support sustainably.

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What is exponential growth?

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Exponential growth is a pattern of population increase where the growth rate is proportional to the current population size.