The Construction Of A Solar Dryer Using Convex Lens

CHAPTER ONE INTRODUCTION 1.1     Background of the Study Growth is the irreversible increase in volume (size) number of part, length and weight of an organism (Umeh, 2004). Growth can be defined as a process by which a plant increase in the number and size of leaves and stems (Rayburn, 1993). Growth is also defined as an irreversible change in the size of a cell, organ or whole organism (Janick; 1979). Growth is an irreversible increase in body size and weight due to incorporation of new protoplasm in the body (sarojini et al; 1991). Growth is a physiological activity involving the enlargement…