Final answer:
Natural selection played a vital role in the dominance of Homo sapiens on Earth, leading to the accumulation of advantageous traits over time.
Step-by-step explanation:
Natural selection played a significant role in the eventual dominance of Homo sapiens on Earth. Through natural selection, individuals with advantageous traits that allowed them to better survive and reproduce were more likely to pass on those traits to future generations.
Over time, this led to the accumulation of beneficial traits in the Homo sapiens population, such as their ability to walk upright, their brain size, and their toolmaking skills.
These traits provided Homo sapiens with a competitive advantage over other hominin species, enabling them to thrive and become the dominant species on Earth.