AQA · Biology · 8461
GCSE Biology: Biodiversity
Ecology · AQA GCSE Biology (8461), specification point 4.7.3.1. Cards are generated from the exam board's own specification for "Biodiversity", and every card links back to the page it came from. Specification © AQA — used with attribution.
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Define biodiversity.
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The variety of all the different species of organisms on Earth, or within an ecosystem.
How does great biodiversity ensure the stability of an ecosystem?
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It reduces the dependence of one species on another for food, shelter and the maintenance of the physical environment.
A great biodiversity ensures the ? of ecosystems.
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stability
Why does the future of the human species depend on biodiversity?
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Because humans rely on stable ecosystems, which need a good level of biodiversity to be maintained.
What effect are many human activities having on biodiversity?
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They are reducing it; measures to stop this reduction have only recently been taken.
Name three human activities that reduce biodiversity.
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Waste, deforestation and global warming.
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