A mining company extracts copper ore. Which action best shows the company is working towards sustainable development?
Extracting the richest ore first so that a profit is made quickly
Moving extraction to a new site once the ore here is used up
Raising the rate of extraction to meet a rise in world demand
Recovering copper from the waste rock heaps left by earlier mining
40 exam-style questions on AQA GCSE Chemistry 10.1 Using the Earth's resources and obtaining potable water, covering 10.1.1 Using the Earth's resources and sustainable development, 10.1.2 Potable water, 10.1.3 Waste water treatment, and 10.1.4 Alternative methods of extracting metals. Each one has a worked solution and a mark scheme showing where the marks go.