This book is all about covid-19, its effect, awareness etc., because we know that today maximum countries around the world have been shut down just because of Corona Virus Disease 2019 (COVID-19) .Though this virus disturbed everything and had a negative effect around the world, there are several positive things which have been done because of COVID-19 and this research has been carried out to highlight the positive things which happen just because of this virus [2]. We know that the pollution is one of the biggest problems and it was continually increasing day by days in the past years like...