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9.2 Energy transfer and biodiversity

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Question 14
F

A fish farm reduces the amount of uneaten food entering a lake. The number of fish being farmed stays the same.

Which change is most likely in the lake?

[1]
A

More organic waste is decomposed and oxygen concentration falls.

B

Less organic waste is decomposed and oxygen concentration falls.

C

Less organic waste is decomposed and oxygen concentration rises.

D

More organic waste is decomposed and oxygen concentration rises.

Markscheme

9.2 Energy transfer and biodiversity Questions

  1. GCSE
  2. /Biology
  3. /9.2 Energy transfer and biodiversity

38 exam-style questions on Edexcel GCSE Biology 9.2 Energy transfer and biodiversity, covering 9.2.1 Energy transfer between trophic levels, 9.2.2 Efficiency of energy transfers, 9.2.3 Human interactions and biodiversity, 9.2.4 Benefits of maintaining biodiversity, and 9.2.5 Biological factors affecting food security. Each one has a worked solution and a mark scheme showing where the marks go.

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