The WWF format is a PDF that cannot be printed out. It's a simple way to avoid unnecessary printing. So here's your chance to save trees and help the environment. Decide for yourself which documents don't need printing out -- then simply save them as WWF.


Download software: http://www.saveaswwf.com
Share on Google Plus

Alex E

Ecoclimax is defined by Odum (1969) as the culmination state after a succession in a stabilized ecosystem in which maximum biomass (or high information content) and symbiotic function among organisms is kept per unit of available energy flow.