| A | B |
|---|
| population | all organisms of one type that live in a particular area |
| ecosystem | populations that interact among themselves and with the physical environment |
| energy | capacity to do work |
| metabolism | all the chemical reactions that take place in a cell |
| photosynthesis | process that transformsd solar energy into chemical energy |
| homeostasis | maintenance of internal conditions within certain boundaries |
| genes | Sections of DNA that contains specific information for an organism |
| adaptations | modifications that make an organism suited for its way of life |
| biosphere | all communities taken together |
| biodiversity | number and size of populations in a community |
| taxonomy | discipline of arranging and classifying organisms |
| theories | concepts based on the conclusions of experiments and observations |
| scientific method | systematic approach of gathering data |
| hypothesis | tentative explanation of a problem |
| experimental or independentvariable | the variable that is manipulated |
| dependent variable | the variable that is observed or recorded |
| control | goes through all the steps of the experiment except the one variable being tested |
