II and III only. The Cambrian Period is the first geological time period of the Paleozoic Era. And the longest unit in geological time is the supereon.
From simplest to most complex it would be atom, molecule, cell, tissue, organ, organ system. Hope this helps!
<span>Acidophile. These organisms have evolved to handle extreme environments that others cannot. An Acidophile has the ability to survive a low pH, such as sulfuric pools and geysers. They get their name by combining the word acid and phile, which means to love.</span>
An increase in genetic variation
