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.
Aristotle's Zoology - The Parts of Animals and the History of Animals. Aristotle (384 BC - 322 BC), the pupil of Plato, took great interest in the natural world, including many aspects of meteorology and geography, but his greatest contribution to science was in the fields of natural history and biology.