How can natural selection lead to speciation?

Answer 1

Because in natural selection heritable traits will be passed down allowing those species to have a better chance at survival, thus making speciation a reality.

Answer 2

Bird's beaks differ in shape depending on their habitat and food sources. These factors, as well as others, play into Natural Selection. Natural Selection was first coined by Charles Darwin when he went to the Galapagos Islands to study wildlife. He found that many birds on the island have different beaks. He also noticed that they ate different foods. For instance a bird with a strong, thick beak is more likely to eat hard seeds then soft star fish. Raptors (hawks, and eagles) have sharp pointed beaks for grabbing and ripping prey. The hummingbird has a long thin beak perfect for reaching into skinny flowers to drink nectar. So, each birds beak has been adapted to fit its food source.

Answer 3

Natural selection leads to speciation because as populations in a species change due to mutations, the less fit organisms die out, while the fit organisms survive and pass on their genes. As this process continues, the evolved population will eventually accumulate enough genetic changes, such that the evolved population can no longer produce fertile offspring with the original population, hence it is said that speciation has occurred.