Year 10 revision

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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 variety of species, genetic diversity, and ecosystem diversity.

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Why is high biodiversity important for ecosystems?

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High biodiversity increases ecosystem resilience, allowing it to better withstand environmental changes and recover from disturbances.

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What is food security?

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Food security is the state in which all people have physical, social, and economic access to sufficient, safe, and nutritious food to meet their dietary needs.

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How does biodiversity contribute to food security?

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Biodiversity increases resilience to pests and diseases, ensuring a stable food supply and reducing the risk of crop failure.

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What are indicator species?

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Indicator species are organisms used to assess the health of an ecosystem or the level of pollution in an environment.

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What is a disadvantage of using indicator species?

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Indicator species do not provide quantitative data on pollution levels; they only indicate the presence or absence of certain conditions.

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What is genetic diversity?

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Genetic diversity refers to the variety of genes within a species, which is crucial for adaptation and survival.

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What is an ecosystem?

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An ecosystem is a community of living organisms interacting with their physical environment.

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What is the role of producers 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 the impact of habitat destruction on biodiversity?

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Habitat destruction leads to loss of species, reduced genetic diversity, and disrupted ecosystems.