Hemali P JoshiDr. Hemali P. Joshi has done M.Sc., B.Ed. and Professional Doctorate Course in Education. She is a resource person for National Children's Science Congress, Mumbai division and has mentored many budding child scientists. Her research projects have seured great success at District, State and National level. This book is one such research that has won Merit award at National level of NCSC platform. To have a core knowledge about anything, a genuine research is to be conducted. Research is mandatory for the understanding of how, what and why Read More Read Less