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.
a serious (sometimes fatal) infection of rodents caused by Yersinia pestis and accidentally transmitted to humans by the bite of a flea that has bitten an infected animal. plague, pestilence, pest (noun).used absolutely, usually capitalized: The Pest) The pestilent disease Plague, caused by the virulent bacterium Yersinia pestis and mostly known by its variant form bubonic plague. plague (Noun). An epidemic or pandemic caused by any pestilence, but specifically by the above disease.