What Evolution Is

Evolution is the natural process through which species change over many generations. It occurs when small genetic differences, passed from parents to offspring, accumulate over time. These changes can help organisms better survive and reproduce in their environment. For example, some animals may develop better camouflage or speed. When these traits improve survival chances, they become more common in the population. Over long periods, these gradual changes can lead to the emergence of new species. Evolution explains the diversity of life on Earth and is supported by extensive scientific evidence.