Macroevolution

Macroevolution refers to the large-scale evolutionary changes that occur over long periods of time, resulting in the emergence of new species and major groups of organisms. This process encompasses significant evolutionary developments, such as the formation of distinct lineages and the branching of life’s tree, beyond the changes seen within a species (which is microevolution). It is driven by mechanisms like natural selection, genetic drift, and environmental changes, leading to diversity in life forms seen today. Understanding macroevolution helps explain patterns in fossils, biodiversity, and the relationships among different species in the grand scheme of life on Earth.