Fact 1: Operating an automobile usually requires fossil fuels.

Fact 2: Fossil fuel pollution can cause asthma and lung problems, especially for children and the elderly.

Given the two facts above, answer the question "A possible downside of driving a car is" with the following options: 
- slow and inefficient
 - more asthma in children
 - split ends
 - greying hair
 - Plant growth is reduced
 - decreases its bodily water
 - balding
 - Greenhouse gasses


 

  more asthma in children       