Biology - Populations

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What is exponential growth in populations?

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Exponential growth occurs when a population increases rapidly in size, typically when resources are abundant and there are few limitations. This is often represented by a J-shaped curve on a graph.

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What are abiotic factors in an ecosystem?

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Abiotic factors are non-living components that affect the environment and living organisms, such as temperature, sunlight, wind, precipitation, and soil type.

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How does an increase in prey population affect predator populations?

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An increase in prey population, such as rabbits, typically leads to an increase in predator populations, like wolves, as there is more food available for the predators.

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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 without degrading the habitat.

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What happens when a species is introduced to a new environment without natural predators?

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When a species, like the common brushtail possum, is introduced to a new environment without natural predators, its population can grow rapidly due to the lack of competition and abundant resources.

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What is the difference between biotic and abiotic factors?

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Biotic factors are living components of an ecosystem (like plants and animals), while abiotic factors are non-living components (like water, soil, and climate).

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What is a food chain?

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A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem, starting from producers to various levels of consumers.

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What is a food web?

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A food web is a complex network of interconnected food chains in an ecosystem, illustrating how different organisms are related through feeding relationships.

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What role do decomposers play in an ecosystem?

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Decomposers, such as fungi and bacteria, break down dead organic matter, recycling nutrients back into the soil and supporting new plant growth.

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What is the significance of biodiversity in ecosystems?

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Biodiversity enhances ecosystem productivity and stability, providing resilience against environmental changes and supporting a variety of life forms.