| A | B |
|---|
| asexual reproduction | reproduction that only requires one organism |
| autotroph | "self feeder" |
| biology | the science of life |
| differentation | a process in which the cells of a multicellular individual become specialized during development |
| DNA | deoxyribonucleic acid |
| ecology | the study of the relationship between organisms and their enviornment |
| ecosystem | all the biotic and antibiotic components of an environment |
| evolution | all the changes that have formed life on earth from its earliest begennings to the diversity that chatacterizes it today |
| gene | a segment of DNA that contains coding for a polypeptide or protein; a unit of hereditaty information |
| heterotroph | an organism that obtains organic food molecules by eating other organisms or their by-products |
| homeostasis | the stable internal conditions of a living thing |
| multicellular organism | a living thing that consists of more than one cell |
| natural selection | the process by which organisms with favorable variations reproduce at higher rates than those without such variations |
| organism | a living thing |
| photosynthesis | the conversion of light energy into chemical energy stored in organic coumpounds |
| reproduction | the production of new offspring |
| sexual reproduction | the production of offspring from the combination of genetic material from two parent organisms |
| unicellular organism | a living thing composed of one cell |
