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9.3 Material cycles and decomposition

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Question 9

A fruit farm has surplus strawberries. The strawberries may be preserved by freezing, drying or vacuum packaging.

Explain why freezing, drying and vacuum packaging each make the strawberries last longer.

In your answer, consider:

  • temperature and liquid water when strawberries are frozen
  • water when strawberries are dried
  • oxygen when strawberries are vacuum packaged.
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Markscheme

9.3 Material cycles and decomposition Questions

  1. GCSE
  2. /Biology
  3. /9.3 Material cycles and decomposition

101 exam-style questions on Edexcel GCSE Biology 9.3 Material cycles and decomposition, covering 9.3.1 Cycling of materials through ecosystems, 9.3.2 The carbon cycle, 9.3.3 The water cycle, 9.3.4 The nitrogen cycle, 9.3.5 Indicator species and pollution, 9.3.6 Decomposition in preservation and composting, and 9.3.7 Rate changes in decay of biological material. Each one has a worked solution and a mark scheme showing where the marks go.

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