Here's how it works:
* Fossils: Fossils show a gradual change in organisms over time, indicating that species have evolved from simpler forms to more complex ones.
* Modern Organisms: The diversity of life on Earth, with organisms adapted to different environments, points to the fact that organisms have changed over time to suit their surroundings.
* Natural Selection: Charles Darwin proposed that organisms with traits that make them better suited to their environment are more likely to survive and reproduce, passing on those beneficial traits to their offspring. This process, called natural selection, leads to gradual changes in the genetic makeup of a population over generations.
In short, the idea is that small genetic changes, beneficial or neutral, can occur within a population, and those changes that help an organism survive and reproduce are more likely to be passed on to future generations. This process, over many generations, can lead to significant changes in the characteristics of a species.
