| A | B |
|---|
| extinct | No longer living as a species. |
| adapt | To change a structure or behavior to survive in an environment. |
| population | A group of the same kind of orgnaisms that live in an area. |
| diversity | The condition of being different. |
| interdependence | Dependence upon one another. |
| ecosystem | An area in which living and nonliving things interact. |
| consumer | A living thing that obtains energy by eating other living things. |
| producer | An organism that makes its own food through photosynthesis. |
| decomposer | A living thing that breaks down the remains of dead organisms. |
| dependence | To be in relationship and influenced by another. |
| habitat | The place where an organism naturally or normally lives and grows. |
| food chain | The path of energy transfer from one living organism to another in an ecosystem. |
| biodome | A major land ecosystem having a distinct combination of plants and animals. |
| herbivore | A consumer that eats only plants or other producers. |
| carnivore | A consumer that eats only other animals. |
| omnivore | A consumer that eats both plants and animals. |
| water cycle | A continuous process in which water moves between the atmosphere and Earth's surface, including the use of water by living things. |
| carbon dioxide-oxygen cycle | A natural cycle in which plants and other producers use carbon dioxide and produce oxygen, and animals, plants, and other living things use oxygen and produce carbon dioxide. |
| nitrogen cycle | The cycle through which nitrogen changes into compounds that can be used by living things and then returns to the atmosphere. |
| biodiversity | The variety of organisms that live in Earth's many ecosystems; the variety of plants and animals that live within a particular ecosystem. |
| endangered | In danger of becoming extinct. |
| cell respiration | The process of using oxygen to release energy from food. |
| condensation | The process by which a gas changes into a liquid. |
| evaporation | The process by which a liquid water changes to water vapor. |
| food web | The overlapping food chains that link producers, consumers, and decomposers in an ecosystem. |
| proteins | Organic compounds that form the structure and control the processes that take place in living things. |
| energy | The ability to cause change. |
| matter | Anything that has mass and takes up space. |
| soil | The upper layer of earth in which plants grow. |
| temperature | A measurement of hotness and coldness. |
| biotic | Living or once living. |
| abiotic | Not living. |
| community | All the organisms living together in a particular ecosystem. |
| rocks | A solid material made of minerals that forms the Earth's crust. |
| species | A group of organisms that differ in one or more characteristics from the organisms in other groups. |
| photosynthesis | The process by which producers, such as plants, make their own food by using energy from the Sun. |
| niche | The role that each species plays in a community. |
| organism | Any living thing, including all plants and animals. |
