Mitochondria are known as the powerhouse of the cell because they contain enzymes that are needed for stepwise oxidation of food stuffs (carbohydrate, fats and lipids) present in the cells...
Activities that add value to the national income are called economic activities. These have two parts – market activities (production for pay or profit) and non-market activities (production for self...
Primary activity involves extraction and utilization of natural resources without much processing. Tertiary activities involve supporting the primary and secondary activities.
