What is natural selection and how does it happen?

Natural selection is a process when individuals in a species are best adapted to there environment and survive to pass on there traits to there offspring. Natural selection happens through random mutations in genes, sometimes the DNA is not copied right and makes a mistake and causes changes in the genes.This helps the animals adapt to there surroundings and they produce offspring that will pass down there traits generation after generation. An example would be the rat snakes they come in a variety of colors. They can be yellow striped, black, orange, or greenish and other colors. This is because the rat snake is found all over the Eastern and Midwestern states, and are subjected to all types of weather and terrain. They are mostly found in urban areas but they have been seen in wooded areas and mountains or coastal regions, the rat snake have adapted to there environment so they can avoid detection and hunt better.