Here's why:
* Evolution happens over generations: Evolution is a gradual process that occurs over many generations. It's the change in the genetic makeup of a population, not an individual, over time.
* Individuals don't evolve: While individuals can change during their lifetime due to environmental factors or injury, these changes are not passed down to their offspring. Evolution is about the accumulation of changes in the genetic code that are passed on from parent to offspring.
* Natural Selection: The driving force behind evolution is natural selection. This is the process where individuals with traits that make them better suited to their environment are more likely to survive and reproduce, passing on those advantageous traits.
So, to summarize, evolution is a slow and gradual process that happens over generations, driven by changes in the genetic makeup of a population.
