Climate change in Brazil is due to the increased emissions of greenhouse gases at a global level. However, Brazil's contribution to greenhouse gas emissions per person are higher than the global average. Most countries which emit a large amount of greenhouse gas do so by burning gasoline in cars and lorries and the use of natural gas and coal in power plants. However, Brazil's emissions are from cutting down trees in the Amazon rainforest (which can no longer absorb carbon dioxide) and from large cattle farms, where cows belch methane.