Kindly give me some investigatory project titles that are not yet proven but can surely help our environment if proven. Fertilizer,lotion,detergent,soap,deodorant , etc. can do. For example, Rice husks ash as a fertilizer aside from rice husks what other materials can we use in order to produce a fertilizer.I hope you can find those cheap and easy yet interesting experiment.God Bless you.

Are you sure any of those ideas are going to please a physics professor? They are biology, chemistry, botany, environmental sciences, but not physics.

Can someone give me a title for my science investigatory project(fertilizer)