1.1. County planners are attempting to protect the environment around a reservoir that is surrounded by trees.

It is a large reservoir with only one access road and a car park that is positioned a few kilometres from the reservoir. 

A steam train has been installed to ferry visitors from the car park to the reservoir, accomodation or activities.

A map of the area is shown in Figure 1.

Figure 1

The steam train uses coal for the furnace which causes environmental problems.

Explain why.

1.2. The planners have stated that the overall amount of carbon dioxide added to the atmosphere must be kept the same to account for the train. 

The steam train would be considered as ‘carbon neutral’ if wood were used instead of coal.

Suggest why.