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7.3 Biodiversity and the effect of human interaction on ecosystems

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Question 41
H

The area of a tropical forest decreased from 250 000 km2\text{km}^2km2 to 180 000 km2\text{km}^2km2 over 20 years.

What was the percentage decrease in the area of the forest?

[1]
A

38.9%

B

72.0%

C

28.0%

D

1.4%

Markscheme

7.3 Biodiversity and the effect of human interaction on ecosystems Questions

  1. GCSE
  2. /Biology
  3. /7.3 Biodiversity and the effect of human interaction on ecosystems

84 exam-style questions on AQA GCSE Biology 7.3 Biodiversity and the effect of human interaction on ecosystems, covering 7.3.1 Biodiversity, 7.3.2 Waste management, 7.3.3 Land use, 7.3.4 Deforestation, 7.3.5 Global warming, and 7.3.6 Maintaining biodiversity. Each one has a worked solution and a mark scheme showing where the marks go.

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