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6.1 Monitoring and maintaining the environment

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Question 45

As part of global environmental monitoring, scientists have been tracking the total volume of an alpine glacier in South America. The table below shows the estimated volume of the glacier, in cubic kilometres (km3\text{km}^3km3), over a thirty-year period.

Year199020052020
Glacier volume (km3\text{km}^3km3)9.68.04.5
a.

Calculate the percentage decrease in the volume of the glacier between 1990 and 2020. Give your answer to 2 significant figures.

[3]
b.

Which of the following is the best description for how the volume of the glacier changed between 1990 and 2020?

  • Decreasing at a decreasing rate
  • Decreasing at a steady rate
  • Decreasing at an increasing rate
[2]
Markscheme

6.1 Monitoring and maintaining the environment Questions

  1. GCSE
  2. /Biology
  3. /6.1 Monitoring and maintaining the environment

109 exam-style questions on OCR GCSE Biology 6.1 Monitoring and maintaining the environment, covering 6.1.1 Field investigation of distribution and abundance, 6.1.2 Human interactions and biodiversity, 6.1.3 Maintaining biodiversity, and 6.1.4 Environmental change and distribution of organisms. Each one has a worked solution and a mark scheme showing where the marks go.

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