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Organisms may become endangered or extinct due to factors such as climate change, habitat loss, hunting, overexploitation, pollution, and the introduction of non-native species.

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Cambridge IGCSE BiologyHuman influences on ecosystemsCore content

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Organisms may become endangered or extinct due to factors such as climate change, habitat loss, hunting, overexploitation, pollution, and the introduction of non-native species

  • This point belongs to Conservation, especially Conservation outcomes.
  • You need to be able to organisms may become endangered or extinct due to factors such as climate change, habitat loss, hunting, overexploitation, pollution, and the introduction of non-native species.
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Explain

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Paper 3 structured question: Conservation

Paper 3Theory (Core)5 marks

Description

Threats to Organisms

Organisms face threats such as climate change, habitat loss, hunting, overexploitation, pollution, and the introduction of non-native species. These factors can reduce populations and lead to endangerment or extinction.

  1. a

    State two factors that can cause organisms to become endangered.

    Aim for approximately 2 distinct marking points.

    [2]
  2. b

    Explain how the introduction of non-native species can cause native species to become endangered.

    Aim for approximately 3 distinct marking points.

    [3]
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Cambridge IGCSEBiology resources