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Exam-style practice

Energy flow answer explanations

Review worked answers and explanations for Energy flow. Aligned to Cambridge IGCSE Combined Science.

Answer explanations

Question 1 of 4

Review the answer support, then move sideways through the set.

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.

    [3]