| A | B |
|---|
| abiotic | an environmental factor not associated with the activities of living organisms |
| acceleration | rate of change in velocity, usually expressed in meters per second; involves an increase or decrease in speed and/or direction |
| air resistance | force of air on moving objects |
| allele | any of two or more alternate forms of a gene that an organism may have for a particular trait |
| amplitude | in any periodic function (eg., a wave) the maximum absolute variation of the function |
| asexual reproduction | a form of reproduction in which new individuals are fomed without the involvement of gametes |
| biodiversity | the existence of a wide range of different species in a given area or specific period of time |
| biotic | factors in an environment relating to, caused by, or produced by living organisms |
| calorie | unit of energy; the amount of heat needed to raise one gram of water one degree Celsius at standard atmospheric pressure |
| chemical weathering | the breakdown and alteration of rocks at or near Earth's surface as a result of chemical processes |
