While going to school, Krish found the following poster on a wall. What he understood by the given poster?
Recycling
Recycling of paper is given in the poster. Recycling is a process to convert waste materials into reusable material to prevent wastage of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution (from incineration), water and soil pollution (from land filling) by reducing the need for conventional waste disposal and lower greenhouse gas emissions.