Fact 1: Planting trees has a positive impact on an ecosystem.

Fact 2: An ecosystem contains many habitats.

Given the two facts above, answer the question "doing what with trees has a positive impact on habitats" with the following options: 
- making tables
 - chopping down
 - planting
 - watershed
 - earth
 - bloom time
 - growth
 - timbering


 

   planting      