1. 
   Eco-action
   An eco-action is any action or activity within a program that is intended to have a positive impact on the environment. For this reason it is often used as a synonym for environmental action. People adopting eco-actions tend to specifically target activities around the ‘Three Rs’ of the waste h...
   Found op http://en.wikipedia.org/wiki/Eco-action
   
   
2. 
   Ecological interaction
   The sum total of impacts of one species on another species, or on other members of the same species.
   Found op http://www.streamnet.org/glossary.html
   
   
3. 
   Ecology Action
   Ecology Action is an environmental organization founded in 1970 under IRS Section 501(c)3, based in Santa Cruz, California. It has a staff of more than 50 people and operates a variety of energy saving, water, waste reduction, and greenhouse gas emmision reduction programs. The organization recentl...
   Found op http://en.wikipedia.org/wiki/Ecology_Action
   
   
4. 
   Economic contraction
   The downward phase of the business cycle, in which GDP is falling and unemployment is rising over time.
   Found op http://www-personal.umich.edu/~alandear/glossary/e.html
   
   

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