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 of living things into animals and plants is an ancient one. Aristotle (384â322 BC) classified animal species in his History of Animals, while his pupil Theophrastus (c. 371âc. 287 BC) wrote a parallel work, the Historia Plantarum, on plants. Carolus Linnaeus (1707â1778) laid the foundations for modern biological nomenclature, now regulated by the Nomenclature Codes, in 1735.