| A | B |
|---|
| Acid Rain | Precipitation with below-normal pH, often the result of industrial pollution and automobile exhaust |
| Biology | science of life |
| Cancer | Disease characterized by abnormal cell growth |
| Cell | smallest unit that can perform all the life processes |
| Control | factor that is held constant throughout an experiment to test a hypothesis |
| Cystic Fibrosis | genetic disorder in which excessive amounts of mucus are secreted, blocking intestinal and bronchial ducts causing difficulty in breathing |
| Experiment | test of a hypothesis in which data are gathered under controlled conditions |
| Heredity | transmission of genetic traits from parent to offspring |
| HIV | human immunodeficiency virus that causes AIDS |
| Homeostasis | maintenance of the internal stability of a cell, organism, or population in its environment |
| Hypothesis | proposed explination |
| Metabolism | sum total of all chemical processes occuring in an organism |
| Multicellular | an organism that consists of more than one cell |
| Observation | information that is known from being seen or experienced directly |
| pH | indicator of the acidity of a solution, representing the hydrogen ion concentration |
| Prediction | the expected out come if a hypothesis is accurate |
| Theory | explanation based on a hypothesis that has been tested many times |
