Suggest me a working science model for class 9th
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there are many working model of class 9th level like
1. automatic railway barrier system
2. moon box
3. home security system
4. road cleaning system
and many other
I you like any one let me know I will give you all the details regarding to it .
If you have any other idea let me know I will help you in doing it.
you can convey me in comment.
1. automatic railway barrier system
2. moon box
3. home security system
4. road cleaning system
and many other
I you like any one let me know I will give you all the details regarding to it .
If you have any other idea let me know I will help you in doing it.
you can convey me in comment.
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