1.1. A small minority of scientists believe that it is changes in solar activity (i.e. changes in the brightness and warmth of the sun) that causes global warming. The graphs below show the changes in solar activity and atmospheric temperature since 1880.

Using the information from the graphs, state how well the evidence supports the argument that solar activity is the cause of global warming.

1.2. Most scientists believe the main cause of global warming is the increase in carbon dioxide levels in the atmosphere.

i) State the main cause of this increase in carbon dioxide levels.

[1]

ii) Describe one method of reducing current atmospheric carbon dioxide levels.

[1]