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Evolution helps us to understand the living world around us, as well as its history. · darwin and a scientific contemporary of his, alfred russel wallace, proposed that evolution occurs because of a phenomenon called natural selection. Evolution is a process of continuous branching and diversification from common trunks. This pattern of irreversible separation gives lifes history its basic directionality. Biological evolution is not simply a matter of change over time. · evolution explains how microscopic single-celled organisms eventually gave rise to the vibrant explosion of life we see today. · evolution is the process by which species change over time through the gradual accumulation of genetic variations, driven by mechanisms like natural selection, genetic drift, … It tells us how species adapt, survive, diverge, and … · evolution, theory in biology postulating that the various types of plants, animals, and other living things on earth have their origin in other preexisting types and that the … The scientific theory of evolution by natural selection was conceived independently by two british naturalists, charles darwin and alfred russel wallace, in the mid-19th century as an … In the theory of natural …