Question

ANY one plz suggest me a best working model of science that can be st state level
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Answer 1

Answer:

Make a solar cell. ...

Working model of science project “cotton candy machine” ...

Working Model science project “water rocket” ...

Working Model of science project “wind turbine” ...

Working Model of Heart. ...

Making of biogas plant.

Answer 2

Answer:

make a power project plan of a sub urb

like with wind Mills, small cars, street lights building s

make the light arrangements with battery

u can consult you tube