If your digital multimeter offers a frequency setting (Hz is the symbol) on the dial: 1  Turn the dial to Hz. 2  First insert the black test lead into the COM jack. 3  Then insert the red lead into the V Ï jack. 4  Connect the black test lead first, the red test lead second.  Read the measurement in the display.
Both systems divided living things into 2 main groups, animal and plants, but aristotses system had 3 sublevels and Linnaeus's had 6. Aristotle divided by habitat and stems and Linnaeus divided by morphology.
The classification system that scientists use today is based on the contributions of Linnaeus. But todayâs classification system uses a series of many levels to classify organisms. The Major Levels of Classification Organisms are classified by their characteristics and relatedness. The diagram below shows the levels most biologists use.