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Darwin and a scientific contemporary of his, Alfred Russel Wallace, proposed that evolution occurs because of a phenomenon called natural selection. In the theory of natural selection, organisms produce more offspring than are able to survive in their environment.
Evolution is the way that living things change over time. The first person who explained how evolution happens was Charles Darwin with his scientific theory of natural selection.
The theory of evolution is a scientific theory that essentially states that species change over time. There are many different ways species change, but most of them can be described by the idea of natural selection.
Evolution is the theory that all the kinds of living things that exist today developed from earlier types. The differences between them resulted from changes that happened over many years. The simplest forms of life arose at least 3.5 billion years ago.
Darwin's theory of Evolution states: "Evolution is the net change in organisms or a population over the span of many generations.” This change in organisms or...
How Evolution works. The mechanisms of evolution explained in one video.The theory of evolution explains how the enormous variety of life could come into existence.
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 distinguishable differences are due to modifications in successive generations.
Charles Darwin concluded that biological evolution occurs as a result of natural selection, which is the theory that in any given generation, some individuals are more likely to survive and reproduce than others. In order for natural selection to occur in a population, several conditions must be met:
Evolution For Dummies Cheat Sheet. Updated: 03-27-2016. In This Article. Introduction. Whether you're talking about evolution — or any other element of science — you should understand the process of scientific investigation, which proves or disproves a scientific theory.
Evolutionary theory: The field of scientific investigation that works to understand what processes are responsible for the evolutionary changes we observe and what the consequences of those changes are.