| Term | Definition |
| Biology | The scientific study of living organsms and their interactions with the enviroment |
| Biomass | organic matter that can be a source of energy; the total mass of the organisms in a given area |
| biome | A large region characterized by a specific type of climate and certain types of plants and animals communities |
| Biotic factor | An enviromental factor that is associated with or result from the activities of living organisms |
| Bird | Apperantly evolved from feathered dinosaurs during or after the Jurassic period. |
| Body Tube | A part of the miscroscope in which you look through. |
| Cancer | An uncontrolled growth of cells. |
| Carbohydrate | A key source of energy; Organic compunds madre of carbon, hydrogen, oxygen. |
| Carnivore | Other animals that eat other animals. |
| Carotenoid | Wave links that observe light different from chlorophyll |
| Carrier Protein | Transport protein that carries products from one side to the other side of the cell. |
| Carrying Capacity | The population size that an enviroment can hold. |