PAenvirothon – Study for the ENVIROTHON on the go! Resources for Wildlife, Soil & Land Use, Forestry and Aquatics will help you prepare for Regional and State events. Hone your skills at bird and frog calls, tree identification, land use and many more fun facts. Don’t get lost in the woods! enviroTREK technology will help guide your exploration through your favorite outdoor classroom! Education in the palm of your hand.