Explanation:
Given the importance of oxygen for animals, researchers suspected that a sudden increase in the gas to near-modern levels in the ocean could have spurred the Cambrian explosion. ... This supported the idea of oxygen as a key trigger for the evolutionary explosion.
Nature refers to biological/genetic for predispositions Impact on human traits and nurture describes the influence of learning and other influences from one’s environment
What is there any options ? <span>
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I think your answer should be dessert
