as for survival a human being needs food and water and some oxygen to breathe : dont waste food rather give it to those who need it dont waste water rather use it for planting a tree it would be useful for nature and pollutions cause cancer ,by planting a tree and use the water purposefully without wasting it ,we can avoid so much of artificial diseases which are made by industries. water gets polluted air gets polluted literally innocent childrens are dying without having food and water in india rather spending milk at rituals we can give to the innocent childrens who need it ,