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I have to make a science still model for science fair .. but i have no idea what to do and how to do plz can anyone suggest some sites which may help..or

plz suggest some ideas.. plz do help me.. i have the science fair next week..



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1.In state level science congress we have made radio without battery we entered to National level but in national level we have made a power saver using human waste .
2.You can make whether,climate,agriculture best models as India depends on agriculture.
3.Models on air pollution control.
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