Unit 8 Review: Ecosystems 8.12

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What is an ecosystem?

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An ecosystem is a community of living organisms (plants, animals, and microorganisms) interacting with their physical environment (air, water, soil) in a specific area.

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What is deforestation?

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Deforestation is the clearing or thinning of forests by humans, which can lead to habitat loss and decreased biodiversity.

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How does deforestation affect biodiversity?

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Deforestation typically decreases biodiversity by destroying habitats, leading to a decline in the number of species.

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What is energy flow in an ecosystem?

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Energy flow in an ecosystem refers to the transfer of energy from one trophic level to another, starting from producers to consumers and decomposers.

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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 a food chain?

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A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

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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, showing how different organisms are related through feeding relationships.

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What is the significance of top predators in an ecosystem?

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Top predators help maintain the balance of ecosystems by controlling the populations of other species, preventing overpopulation and promoting biodiversity.

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What is the impact of drought on aquatic organisms?

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Drought can lead to the drying up of water bodies, severely affecting aquatic organisms, particularly those that rely on water for survival, like frogs.

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How does fire benefit certain grass species?

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Some grass species require fire for their seeds to germinate, allowing them to grow and thrive in nutrient-rich soil after a fire.

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