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I'd be grateful if someone would point me in the right direction! I'm doing a display at a national science week event on waste management and need a hands-on activity covering the importance of bacteria in recycling. Something along the lines of what bacteria actually are and how they help recycle nutrients in either a natural cycle or in an industrial process is what I'm looking for. Audience age - Primary 6 to Secondary 2 (10 - 14 year olds). Thanks in advance. Mandy Tulloch. ---------------------- Mandy Tulloch Conoco Natural History Centre Aberdeen University [log in to unmask]