Evolution is the process by which populations of organisms change over generations in response to environmental pressures. This change can be driven by factors like:
* Natural selection: Organisms with traits that make them better suited to their environment are more likely to survive and reproduce, passing those traits on to their offspring.
* Genetic drift: Random changes in gene frequencies within a population.
* Mutation: Changes in DNA sequences that can introduce new traits.
So, a group of organisms that changes over time is said to be evolving.
