Introduction to Bacterial Food Poisoning and Blood Infection Many types of bacterial species live in the soil, water, on the skin, and even within the intestines of human beings. Most bacteria participate in orderly relationships with their ...
Introduction to Viruses and Non-living Parasites of Cells The Five-Kingdom System is commonly used to classify all living organisms. Note that in the preceding sentence, the word, living, was emphasized. The reason for this emphasis ...