| A | B |
| organ | stucture containing tissues that are organized to carryout a specific function of the body |
| organism | any living plant, animal or fungus that maintains various vital processes necessary for life |
| physical change | a reaction |
| planet | a large body in space that orbits a star |
| pollution | an alteration of the natural enviroment producing a donition that is harmful |
| population | a group of organisms that r the same speices |
| potentail energy | the energy of an object |
| producer | an organism that makes it's own food from the enviroment |
| prey | an organism caught or hunted for food by another organism |
| predator | an organism that preys on and consumes animals |
| protist | unicellular organisms belonging to the kingdom of protista |
| pulley | a simple type of machine |
| reflection | the bouncing off or turning back of light sound or heat from a surface |
| refraction | a change in direction |
| renewable resource | a resource that is replaced or restored |
| resource | any material that can de used to satisfy a need |
| scientific method | plan or inquiry |
| sedimentary rock | rock formed from layers |
| solar system | star and all the planets and other bodies that orbit the region |
| solid | having a definite shape and definite volume |
| solution | a mixture or two or more substance uniformily dispersed throughout a single phase |