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

Fact 2: Indiana forests are complex ecosystems.

Given the two facts above, answer the question "What has a positive impact on forests?" with the following options: 
- genetic diversity
 - some invertebrates
 - planting trees
 - food and shelter
 - lowered energy cost
 - extinction of species
 - logging
 - canopy removal


 

   planting trees      