Fact 1: Burning fossil fuels increases the carbon in the atmosphere.

Fact 2: More carbon in the atmosphere means atmospheric warming.

Given the two facts above, answer the question "What causes global warming?" with the following options: 
- Oceans rising
 - Deforestation
 - Greenhouse gasses
 - Burning fossil fuels
 - Greenhouse gases
 - Movement of an air mass
 - Leaving lights on
 - tectonic plates coliding


 

    Burning fossil fuels     