Respiration is the process through which the cells of our body produce the energy that is required for performing many important tasks. Each cell of our body utilizes the food we eat by respiration to break down the glucose present in the food into usable energy.
pest - any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.; he sprayed the garden to get rid of pests; many pests have developed resistance to the common pesticides.
PEST Analysis. A PEST analysis is an analysis of the external macro-environment that affects all firms. P.E.S.T. is an acronym for the Political, Economic, Social, and Technological factors of the external macro-environment.Such external factors usually are beyond the firm's control and sometimes present themselves as threats.For this reason, some say that pest is an appropriate term for these factors.However, changes in the external environment also create new opportunities and the letters sometimes are rearranged to construct the more optimistic term of STEP analysis.or this reason, some say that pest is an appropriate term for these factors. However, changes in the external environment also create new opportunities and the letters sometimes are rearranged to construct the more optimistic term of STEP analysis.