Hi give me some ideas on waste management models ( for science exibihition)..
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composter... it's a new device which makes biodegradable waste into manure...
water purifier... go and check lies YouTube channel for inspirational projects
water purifier... go and check lies YouTube channel for inspirational projects
HMSH:
any other?
water purifier comes under water management na?
ok i will check it
any way *thank you!*
okay i'll wait
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