A life cycle assessment of a ceramic washbasin includes a score for the change to the landscape caused by quarrying. Two assessors examine the same evidence.
Why might the assessors give different scores for the change to the landscape?
Quarrying is not a stage of the life cycle, so it has no agreed scoring method.
The landscape score includes the water used each time the washbasin is used.
Landscape change is measured with instruments that give a different reading each time.
How serious the landscape change is depends partly on each assessor's opinion.
99 exam-style questions on AQA GCSE Chemistry 10.2 Life cycle assessment and recycling, covering 10.2.1 Life cycle assessment and 10.2.2 Ways of reducing the use of resources. Each one has a worked solution and a mark scheme showing where the marks go.