Once Mr. Ankit was telling his son,"we need 15 trees' paper to make a single answer sheet on which you write during exams. Therefore a lot of plants are dying only for this reason and there is an increase in pollution".
Next day his son told him -"Father I have thought about the matter of cutting down trees last night and also came up with a solution.
Father: "Well, what is it?"
Son: "Father, let us say no to exams."