The Earth is heating up as CO2 levels are increasing – why?

Earth’s atmosphere is an insulating layer

It lets the Sun’s heat in but also stops some going out

Increase in carbon dioxide due to:

1. Deforestation (loss in photosynthesis)

2. Combustion of fossil fuels

Increase in methane due to:

1. livestock farming

2. rotting plant material

3. drilling for oil and gas