what are its divisions?
The Cambrian is divided into four epochs (series) and ten ages (stages).
Cambrian
 The Cambrian is divided into four epochs (series) and ten ages (stages).
in which evolutionary force does competition play the biggest role UNANSWERABLE what is apex predator? An apex predator, also known as an alpha predator or top predator, is a predator at the top of a food chain, without natural predators. how is it conserved? By reintroducing them to nature . what effect does it have on community? Apex predators affect prey species' population dynamics and populations of other predators, both in aquatic and in terrestrial ecosystems. what is its history in evolution? Apex predators are thought to have existed since at least the Cambrian period, around 500 million years ago. what is this aforesaid period? It was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon.
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Cambrian [SEP] Subdivisions
The Cambrian Period followed the Ediacaran Period and was followed by the Ordovician Period. The Cambrian is divided into four epochs (series) and ten ages (stages). Currently only three series and six stages are named and have a GSSP (an internationally agreed-upon stratigraphic reference point). Because the international stratigraphic subdivision is not yet complete, many local subdivisions are still widely used. In some of these subdivisions the Cambrian is divided into three series (epochs) with locally differing names – the Early Cambrian (Caerfai or Waucoban, mya), Middle Cambrian (St Davids or Albertan, mya) and Furongian ( mya; also known as Late Cambrian, Merioneth or Croixan).