Fact 1: Most modern gymnosperms are trees with woody trunks.

Fact 2: Trees are still used for fuel in some places.

Given the two facts above, answer the question "What can some gymnosperms be used as?" with the following options: 
- blanket
 - fuel
 - Seesaw
 - Pet food
 - Dog food
 - edible
 - food
 - organ


 

  fuel       