| A | B |
|---|
| Abiotic | A term that describes a nonliving factor in an ecosystem. |
| Agriculture | The artificial cultivation of food by the systematic growing and harvesting of various organisms. |
| Aquatic | A term that describes an organism associated with a water environment. |
| Bioenergetics | The study of energy flow into and within living systems. |
| Biogeochemical Cycles | The movement of abiotic factors between the living and nonliving components within ecosystems; also known as nutrient cycles |
| Biome | A large area or geographical region with distinct plant and animal groups adapted to that environment. |
| Biosphere | The zone of life on Earth. |
| Biotic | A term that describes a living or once living organism in an ecosystem. |
| Community | Different populations of organisms interacting in a shared environment. |
| Consumer | An organism that obtains energy by feeding on other organisms or their remains. |
| Decomposer | An organism that obtains nutrients by consuming dead and decaying organic matter which allows nutrients to be accessible to other organisms. |
| Ecology | The study of the relationships between organisms and their interactions with the environment. |
| Ecosystem | A system composed of organisms and nonliving components of an environment. |
| Endemic Species | A species that is found in its originating location and is generally restricted to that geographic area. |
| Energy Pyramid | A model that illustrates the biomass productivity at multiple trophic levels in a given ecosystem. |
| Environment | The total surroundings of an organism or a group of organisms. |
| Food Chain | A simplified path illustrating the passing of potential chemical energy from one organism to another organism. |
| Food Web | A complex arrangement of interrelated food chains illustrating the flow of energy between interdependent organisms. |
| Habitat | An area that provides an organism with its basic needs for survival. |
| Limiting Factor | Chemical or physical factor that limits the existence |
| Nonnative Species | A species normally living outside a distribution range that has been introduced through either deliberate or accidental human activity;also can be known as invasive or alien. |
| Succession | A series of predictable and orderly changes within an ecosystem over time. |
| Symbiotic Relationship | A relationship between two organisms in which both organisms benefit. |
| Organism | A form of life |
| Population | A group of individuals of the same species living in a specific geographical area Producer |
| System | A set of interacting or interdependent components that form an integrated whole. |
| Terrestrial | A term that describes an organism associated with a land environment. |
| Trophic Level | The position of an organism in relation to the flow of energy and inorganic nutrients through an ecosystem. |
