Answer:
The Paleozoic (or Palaeozoic) Era "old" and zōḗ, "life", meaning "ancient life") is the earliest of three geologic eras of the Phanerozoic Eon. It is the longest of the Phanerozoic eras, lasting from 541 to 251.902 million years ago, and is subdivided into six geologic periods (from oldest to youngest): the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian. The Paleozoic comes after the Neoproterozoic Era of the Proterozoic Eon and is followed by the Mesozoic Era.
Explanation:
Https://quizlet.com/35691838/unit-5-essay-c-flash-cards/ (found this on quizlet hope this makes sense and/or helps!)
There were changes in both social and living conditions.
