Question

Ideas for Science Fair for Working Model :
The topics are :
Environmental issues & concerns
Energy conservation
Waste management
Resource management
Disaster management
This are all topics given to me in thsi choose any one and give me the best topic and ideas and how to the working model

Answer 1

I will take the energy conservation i will make models by using solar cells , I will make models of windmills, I will explain how to use free resources like sun wind tidal energy