| A | B |
| abiotic | nonliving factors in the environment |
| analyze | – to examine carefully and in detail; to identify causes, key factors or possible results |
| bilateral symmetry | a body plan in which two halves of an organism's body are mirror images of each other |
| biodegradable | capable of being broken down by the environment |
| biodiversity | the number and variety of living things |
| biome | a large regions characterized by a specific type of climate and certain types of plant and animal communities |
| biosphere | the part of the earth where life exists |
| biotic | living factors or organisms in the environment |
| carbohydrate | a biochemical composed of one or more simple sugars bonded together to be used as a source of energy |
| carnivore | a consumer that eats only animals |
| cellular respiration | the process of producing ATP from oxygen and glucose; releasing carbon dioxide as a waste product |
| Chordata | the phylum that animals with a hollow nerve cord belong to |