Zoologists, also known as animal biologists or animal scientists, study animals in their natural habitats and in laboratory settings to understand their behavior and aspects of their life. Many institutions offer bachelor's, master's and doctoral programs in zoology. At the undergraduate level, students complete general education classes, like composition and psychology, and get the basics of animal science and biology. This degree option usually takes 4 years to finish.
Living things need nutrients because nutrients provide us with the energy we need in order to live, they also provide our bodies with the raw materials for constructing the m â¦ olecules on which our body survival depend. 2 people found this useful.
1 Water -- Bacteria need water to dissolve the food they use for energy and growth. 2  Water allows the food to get into the cells, is used for the many chemical reactions necessary for life and growth, and allows waste products to escape.3  Food/Nutrients -- All bacteria require energy to live and grow. Energy sources such as sugars, starch, protein, fats and other compounds provide the nutrients. 2  Oxygen -- Some bacteria require oxygen to grow (aerobes) while others can grow only in the absence of oxygen (anaerobes).