Trees lower air temperature by evaporating water in their leaves.
Tree roots stabilize soil and prevent erosion.
Trees improve water quality by slowing and filtering rain water, as well as protecting aquifers and watersheds.
The averaged size tree can provide enough wood to make 170,000 pencils.
Trees provide food and shelter for wildlife.
Trees provide protection from downward fall of rain, sleet, and hail as well as reduce storm run-off and the possibility of flooding.
Tree leaves help trap and remove tiny particles of soot and dust which otherwise damages human lungs.