In biological evolution, the genetic composition of populations changes over time.
Isolated islands provide a microcosmic view of evolution.
Mauritius was the home of the dodo bird, the first recorded extinction due directly to human intervention. The Hawaiian Islands have afforded an opportunity to study the impact of human intervention on species. Darwin was a naturalist on board the HMS Beagle during its 5-year voyage. Darwin and Wallace presented their ideas and Darwin finally published his book in 1859. If a trait ensures an individual's survival, reproduction is more likely.