The foods we eat, the air we breathe, cleaning chemicals, our emotions and literally every object that we can see or touch, love, jealousy, infatuation and all share in chemistry. For all living things to function and survive, their bodies perform various chemical processes.

4.कमपयुटर हारडवेयर तिन परकारमा विभाजित छ। तिनीहरू हुन :