| A | B |
| organisms | living things |
| chlorophyll | a green substance in plant leaves that captures energy from the sun |
| carbon dioxide | gas in the atmosphere that plants use during the process of photosynthesis |
| stomata | tiny holes in the leaves of a plant that allow gases to enter or leave the plant |
| photosynthesis | the process in which plants use energy from the sun to make their own food |
| producer | an organism that makes its own food |
| traits | characteristics of an organism |
| inherited traits | characteristics passed down from parents to offspring |
| offspring | children |
| adapt | change |
| perish | die |
| adaptation | a change an organism undergoes in order to survive |
| reproduce | to make offspring |
| instinctive behaviors | behaviors that are inherited |
| learned behaviors | behaviors that are learned |
| habitat | the specific environment where an organism lives |
| species | a group of organisms that produce offspring like themselves |
| population | all the organisms of the same species that live in the same area at the same time |
| community | populations of different species that live in the same area at the same time |
| ecosystem | all the populations of organisms and the nonliving things in an environment, and the interaction among them |
| biome | one of the six major land areas of the world that is home to specific plant and animal populations and is defined by its climate |
| life cycle | the stages of development of an organism as it grows |
| thrive | to grow in a strong and healthy way |
| pollution | anything in the environment that can harm living organisms or damage the natural resources there |
| unique niche | organism's role in an ecosystem based on how it gets its food |
| consumers | animals that eat other organisms |
| herbivores | animals that eat only plants |
| carnivores | animals that eat only other animals |
| omnivores | animals that eat both plants and animals |
| predators | animals that hunt other animals for food |
| prey | animals that are hunted by predators |
| decomposers | organisms that feed on dead plants and animals, as well as animal wastes |
| food chain | the path of energy from the sun to a plant to an animal to another animal |
| food web | a group of overlapping food chains |