| A | B |
|---|
| ecology | interactions of organisms |
| ecosystems | large ecological studies |
| natural selection | survival of the fittest |
| photosynthesis | capture energy from the sun |
| autotrophs | make their own food |
| heterotrophs | take food from environment |
| biology | study of living things |
| extinction | no longer exist |
| sexual reproduction | male & female needed to reproduce |
| asexual reproduction | single organism reproduces itself |
| homeostasis | all systems working fine |
| DNA | hereditary information |
| scientific method | steps taken to investigate a problem |
| hypothesis | educated guess |
| experimenting | testing an hypothesis |
| theory | broad and comprehensive statement |
| ocular lens | located in the eyepiece |
| objective lens | located at the base of the nosepiece |
| compound light microscope | used to examine living and non-living specimens |
| electron microscope | used to examine non-living specimens |
