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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Energy flow

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Energy flow

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Paper 3Theory (Core)4 marks

Understanding the Sun's energy is vital for biology.

Description

Energy Flow in Ecosystems

The Sun's energy is captured by plants and transferred through the food web.

  1. a

    Describe how energy from the Sun is transferred through an ecosystem.

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 3 structured question: Energy flow

Paper 3Theory (Core)3 marks

Description

The Sun's Role in Energy Transfer

The Sun provides energy that is essential for photosynthesis, which is the foundation of food chains.

  1. a

    Explain the importance of the Sun as the main energy source for biological systems.

    Aim for approximately 3 distinct marking points.

    [3]