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.