what is its history in evolution?
Apex predators are thought to have existed since at least the Cambrian period, around 500 million years ago.
Apex predator
Apex predators are thought to have existed since at least the Cambrian period, around 500 million years ago. 
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.
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Apex predator [SEP] Evolutionary history
Apex predators are thought to have existed since at least the Cambrian period, around 500 million years ago. Extinct species cannot be directly determined to be apex predators as their behaviour cannot be observed, and clues to ecological relationships, such as bite marks on bones or shells, do not form a complete picture. However, indirect evidence such as the absence of any discernible predator in an environment is suggestive. "Anomalocaris" was an aquatic apex predator, in the Cambrian. Its mouthparts are clearly predatory, and there were no larger animals in the seas at that time. Carnivorous theropod dinosaurs including "Allosaurus" and "Tyrannosaurus" have been described as apex predators, based on their size, morphology, and dietary needs.