| A | B |
| amphibious | able to live on both land and in water |
| biochemistry | the study of the chemical substances and processes in living things deals with plants and animals and their life processes |
| biodegradable | able to be broken down into natural substances by organisms, especially bacteria, in the environment |
| biography | the story of a person's life |
| bionics | the study of living systems with the intention of applying their principles to engineering designs |
| biosphere | the part of the earth, from it's crust out into the atmosphere, where living organisms are found |
| biotic | pertaining to life, or caused by living organisms |
| symbiosis | the living together of two types of organisms for their mutual benefit |