What is a selective advantage and how does it contribute to the survival and evolution of a species?

A selective advantage is a trait or characteristic that gives an organism a better chance of surviving and reproducing in its environment. This advantage allows the organism to pass on its genes to the next generation, increasing the likelihood of those genes being present in future populations. Over time, these advantageous traits can accumulate through natural selection, leading to the evolution of a species that is better adapted to its environment.