1. A(n) is the study of interactions between organisms and their environment. factors are nonliving factors that make up an environment. factors are living factors that make up an environment. 2. A(n) is an individual living thing, such as a plant, an animal, or a bacterium. 3. A(n) is a group of individuals of the same species living in a particular geographic area. 4. A(n) consists of all of the organisms that live in the same area at the same time. 5. A(n) consists of all of the abiotic and biotic factors in an area.