Global scheme of nitrogen cycle, showing major nitrogen reservoirs (atmosphere, soil and living organisms), major processes (nitrification, denitrification, nitrogen fixation, assimilation etc.) and actors (plants, animals, bacteria, human beings).
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Go for the eco-label!
When shopping for a new washing machine, look for an energy-efficient model that uses the least amount of water. To find out more, visit the Eco-Label web-site that lists energy-efficient appliances:
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