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.
Updated October 23, 2015. For centuries, the practice of naming and classifying living organisms into groups has been an integral part of the study of nature. Aristotle (384BC-322BC) developed the first known method of classifying organisms, grouping organisms by their means of transport such as air, land, and water.