Final answer:
Natural selection can create adaptations as well as lead to genetic drift, mutation, and speciation in isolated populations.
Step-by-step explanation:
Natural selection, over time, can create adaptations in isolated populations such as those found on islands
However, in addition to adaptations, natural selection can also lead to other changes in populations. These changes can include genetic drift, mutation, and speciation.
Genetic drift occurs when allele frequencies in a population change randomly, while mutation introduces new genetic variations. Speciation, on the other hand, occurs when a single species gives rise to multiple new species, often through adaptive radiation.