What is the main cause of global warming?

Question: What is the main cause of global warming?
- Keywords:
  climate,
  energy,
  environment
Asked by to Ricardo, Liam, Kim, Jennifer, James on 16 Jun 2014. This question was also asked by .
- Jennifer Stephens answered on 16 Jun 2014:
  
  Hi bethanie2807
  The burning of fossil fuels (oil, natural gas and coal) is the main cause of global warming. It causes a build up of carbon dioxide in the atmosphere which warms the planet.

Question: What is the main cause of global warming?