Two parcel delivery services, P and Q, deliver the same total number of parcels over the lifetimes of their delivery vehicles.
The table shows the estimated emissions of carbon dioxide and other greenhouse gases associated with the vehicles.
| Life-cycle stage | Service P emissions in tonnes | Service Q emissions in tonnes |
|---|---|---|
| Making the vehicles | 36 | 52 |
| Using the vehicles | 58 | 39 |
| Disposing of the vehicles | 4 | 5 |
A manager claims that service P has the smaller carbon footprint because making its vehicles releases fewer greenhouse gases.
Evaluate the manager's claim. Use the data in your answer.
73 exam-style questions on AQA GCSE Chemistry 9.2 Carbon dioxide and methane as greenhouse gases, covering 9.2.1 Greenhouse gases, 9.2.2 Human activities which contribute to an increase in greenhouse gases in the, 9.2.3 Global climate change, and 9.2.4 The carbon footprint and its reduction. Each one has a worked solution and a mark scheme showing where the marks go.