Fact 1: Gases released during the use of fossil fuels causes global warming.

Fact 2: Sea level rise is caused by global warming and the fastest growing source is air traffic.

Given the two facts above, answer the question "What do fossil fuel gases cause?" with the following options: 
- Extra money
 - Sea level rise
 - forest is destroyed
 - Mining opportunity
 - population movement
 - Dehydration
 - deforestation
 - oxygen


 

  Sea level rise       