Oxygen

In a single day, a human being breathes oxygen equivalent to three cylinders. Each oxygen cylinder on an average costs Rs 700, so in a day one uses Oxygen worth Rs 2100 and for a full year worth Rs 7, 66,500. Considering 65 years as an average life span, the cost of oxygen we use works out to be a staggering sum of Rs 50,000,000. All this oxygen comes free-of-cost from the surrounding trees. Not many people   look at trees as a critical resource, and there is rampant tree cutting going on everywhere which must stop. 

Tags: Human, oxygen, tree cutting