how does evolution work

Evolution is how living things change over time. For example, sometimes animals and plants are born with traits that help them survive better than other animals and plants. With time, these traits become more common because animals and plants with those traits are more likely to survive and reproduce, allowing those traits to become even more common in the species. Over long periods of time, lots of these changes can add up and create new species that look different and have different features than the original species.