He explained them in terms of descent with modification, common descent and natural selection.
Charles Darwin formulated the notion of natural selection to explain the existence of patterns of radiative adaptation in nature, and to explain the seemingly common origin of diverse lifeforms.
explain the correlation between Darwin's theory and Malthus' idea
Modern scientists now use genetics to help explain the theory of natural selections.
On his return trip to England, Darwin thought about the tortoises and their vegetation compared to the height of the animals.
natural selection and common descent
Charles Darwin formulated the notion of natural selection to explain the existence of patterns of radiative adaptation in nature, and to explain the seemingly common origin of diverse lifeforms.
What patterns did Darwin see during his voyage
On his trip to the Galapagos Islands, Darwin determined that animals on the islands
explain the correlation between Darwin's theory and Malthus' idea
He developed main streams of DNA.
Charles Darwin's observations were quite interesting. For instance he observed that the animals of the Galapagos Islands were different from other animals.
descent. Darwin was of the first to suggest this.
birds
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The four main sources of evidence Darwin used to explain evolution are fossil records showing transitions in species over time, homologous structures in different species suggesting a common ancestor, the geographical distribution of species supporting the idea of adaptation to local environments, and the observable process of artificial selection in domesticated organisms.
Darwin reasoned that plants or animals that arrived on the Galapagos Islands faced conditions that were different from those on the mainland. Perhaps, Darwin hypothesized, the species gradually changed over many generations and became better adapted to the new conditions.
Charles Darwin was seeking to explain the patterns of biodiversity he observed during his travels, particularly how different species had evolved over time and adapted to their environments. He wanted to understand the mechanisms driving these changes, leading to the development of his theory of natural selection as a process for evolution.