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

Fact 2: Global warming threatens the entire planet.

Given the two facts above, answer the question "Gases released during the use of fossil fuels threaten what?" with the following options: 
- coastlines
 - the entire planet
 - solar movement
 - The atmosphere
 - Plant growth is reduced
 - living things
 - star systems
 - star formations


 

  the entire planet       