LS2 Biology Review

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What is ecological succession?

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The process by which ecosystems change and develop over time, involving a series of stages from pioneer species to a climax community.

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What are pioneer species?

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Organisms, such as lichens and mosses, that are the first to colonize previously disrupted or damaged ecosystems.

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What is primary succession?

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The development of an ecosystem in an area where no soil exists, such as after a volcanic eruption.

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What is secondary succession?

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The process of ecosystem recovery that occurs in an area where a disturbance has destroyed an existing community but left the soil intact.

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What is a climax community?

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A stable and mature ecological community that has reached a final stage of succession.

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How does habitat loss affect species survival?

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Habitat loss can lead to decreased food sources, increased competition, and ultimately, the decline or extinction of species.

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What is the greenhouse effect?

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The warming of Earth's surface due to the trapping of heat by greenhouse gases in the atmosphere.

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What are primary consumers?

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Organisms that eat producers (plants) and are the second trophic level in an ecosystem.

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What role do producers play in an ecosystem?

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Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.

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What is deforestation?

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The large-scale removal of trees from forested areas, leading to habitat loss and increased carbon emissions.