Answers

2015-11-08T11:28:21+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Anything solar.. like solar car or solar coocker
rainwater harvesting 
life cycle of any organism.. like silkworm, cockroach, humans, etc

hope this is useful.. best of luck for ur science  exhibition

thank u,
HarryJamesPotter
2 2 2
2015-11-08T11:35:05+05:30
For science Exhibition u can make :-

1. Spy robot

2. Solar car

3. metal detector

4. Fire alarm

5. Robot
1 3 1