APES Fall Final Review

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What is biodiversity?

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Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the number of different species, genetic diversity, and ecosystem diversity.

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What does a decrease in biodiversity indicate about an ecosystem?

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A decrease in biodiversity often indicates that an ecosystem is under stress or has been adversely affected by factors such as pollution, habitat destruction, or invasive species.

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What are descending dry air currents and their effect on climate?

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Descending dry air currents are air masses that sink and warm, leading to arid conditions. This is why many deserts are found around 30° latitude.

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What is resource partitioning?

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Resource partitioning is the process by which species divide resources to reduce competition, allowing them to coexist in the same habitat.

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What is the demographic transition model?

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The demographic transition model describes the transition of a country from high birth and death rates to low birth and death rates as it develops economically.

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What characterizes stage 3 of the demographic transition?

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Stage 3 is characterized by declining birth rates, continued low death rates, and a growing population.

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What are low-tolerance species?

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Low-tolerance species are organisms that cannot survive in polluted or degraded environments and are often indicators of ecosystem health.

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What are high-tolerance species?

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High-tolerance species are organisms that can thrive in polluted or degraded environments, often indicating a decline in ecosystem health.

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What is ecological succession?

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Ecological succession is the process by which ecosystems change and develop over time, often following a disturbance.

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What is environmental resistance?

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Environmental resistance refers to the factors that limit the growth of a population, such as food availability, predation, and disease.