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9.1 Ecosystems and interdependence

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Question 8

Ecologists investigate factors that could reduce the growth of plants in an alpine meadow.

Which factor is biotic?

[1]
A

a shortage of water in the soil

B

freezing temperatures at night

C

low light intensity on cloudy days

D

competition with grasses for light

Markscheme

9.1 Ecosystems and interdependence Questions

  1. GCSE
  2. /Biology
  3. /9.1 Ecosystems and interdependence

82 exam-style questions on Edexcel GCSE Biology 9.1 Ecosystems and interdependence, covering 9.1.1 Levels of organisation in ecosystems, 9.1.2 Abiotic and biotic factors, 9.1.3 Importance of interdependence, 9.1.4 Parasitism and mutualism, and 9.1.5 Determining number of organisms in an area. Each one has a worked solution and a mark scheme showing where the marks go.

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