| A | B |
|---|
| Physical properties | characteristic of a material that can be observed without changing the identity of the material |
| mixture | combination of substances that do not combine chemically but do retain their individual properties |
| element | a substance that can not be broken down into simpler substances |
| compound | composed of atoms of different substances that are chemically combined |
| parasitism | symbiotic relationship in which one species benefits at the expense of the other |
| mutualism | symbiotic relationship beneficial to both species |
| commensualism | symbiotic relationship in which one species benefits and the other is neither harmed not helped |
| predation | a mode of life in which food is obtained by killing and consuming animals |
| food web | shows all possible feeding relationships in a community |
| autotroph | organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds |
