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Thomas Malthus was arguably the person who was most influential to Darwin. Even though Malthus was not a scientist, he was an economist and understood populations and how they grow. Darwin was fascinated by the idea that the human population was growing faster than food production could sustain.

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In 1831, Charles Darwin received an astounding invitation: to join the HMS Beagle as ship’s naturalist for a trip around the world. For most of the next five years, the Beagle surveyed the coast of South America, leaving Darwin free to explore the continent and islands, including the Galápagos.

He is best known as the author of Principles of Geology. It popularized geologist James Hutton’s concept of “uniformitarianism” ” the idea that the Earth was shaped by slow-moving forces still in operation today.

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What geological phenomena and formations did Darwin witness? How did these shape his thinking about the age of the earth or how life changed? a band of shells and corals that lay about thirty feet about sea level, so he wondered if the sea level had fallen or if island rose.

How did Hutton’s and Lyell’s ideas influences Darwin’s thinking about evolution? They proposed that geologic events in the past were caused by the same processes operating today, at the same gradual rate. This suggested that Earth must be much older than a few thousand years.

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Summary. Darwin’s ideas conflicted with widely held beliefs, such as the idea that organisms never change and that the world was only about 6,000 years old. Darwin was influenced by other scientists, including Lamarck, Lyell, and Wallace.

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Thomas Malthus and Charles Lyell were two figures who influenced Darwin’s theories. Malthus argued that there was never enough food to keep up with human population growth, so humans would always suffer from famine and misery. Evolution occurs, organisms change over time. He was also Charles Darwin’s cousin.

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How did the work of Lyell and Malthus influence Darwin as he developed his theory of evolution? Lyell’s observations that gradual processes shape Earth influenced Darwin to believe that over time life forms could also gradually change. Malthus inspired Darwin’s idea of survival of the fittest.

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It was Lyell’s book, but Hutton’s ideas, that inspired Darwin to incorporate the concept of an “ancient” mechanism that had been at work since the beginning of the Earth in his own world-changing book, “The Origin of the Species.” Thus, Hutton’s concepts indirectly sparked the idea of natural selection for Darwin.

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More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.

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Darwin’s revolutionary theory was that new species arise naturally, by a process of evolution, rather than having been created”forever immutable”by God.

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Charles Robert Darwin (1809-1882) transformed the way we understand the natural world with ideas that, in his day, were nothing short of revolutionary. He and his fellow pioneers in the field of biology gave us insight into the fantastic diversity of life on Earth and its origins, including our own as a species.

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Mendel and evolution Darwin published “On The Origin of Species” in 1858. Mendel read the second German edition of Darwin’s work in 1863 and published “Experiments on Plant Hybrids” in 18661.

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Mendel’s most-important concept was the idea that the paired genes present in the parent separate or segregate during the formation of the gametes. Moreover, in later experiments in which he studied the inheritance of two pairs of traits, Mendel showed that one pair of genes is independent of another.

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With Darwin’s discovery of natural selection, the origin and adaptations of organisms were brought into the realm of science. The adaptive features of organisms could now be explained, like the phenomena of the inanimate world, as the result of natural processes, without recourse to an Intelligent Designer.

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There are four principles at work in evolution”variation, inheritance, selection and time. These are considered the components of the evolutionary mechanism of natural selection.

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How did the observations during his voyage on the Beagle influence Darwin’s theories? He observed that many similar organisms, like finches, had adaptations that made them better suited to their environment.

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In Galapagos he found a remarkable population of plants, birds and reptiles that had developed in isolation from the mainland, but often differed on almost identical islands next door to one another and whose characteristics he could only explain by a gradual transformation of the various species.

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Darwin’s most important observations were made on the Galápagos Islands (see map in Figure below). This is a group of 16 small volcanic islands 966 kilometers (600 miles) off the west coast of Ecuador, South America. Galápagos Islands.

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…work immediately on his book, Principles of Geology, the first volume of which was published in July 1830.

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The principle of uniformitarianism states that processes that alter the earth’s crust are the same processes that occurred millions of years ago. Furthermore, the results of processes today are the same as the results of the same processes millions of years ago.

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Geology played a major role in Darwin’s life and scientific work: The formation of volcanoes, the slow subsidence of coral reefs, the rising of the Andes by earthquakes, the fossil relatives to modern species in South America, these geological observations enabled Darwin to grasp two fundaments needed for his

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Geology is the science that studies the Earth’s physical structure and substances, the history of rocks, the processes that act on them and the most economic way to use the world’s resources. Geology involves methods and knowledge from biology, chemistry, physics and mathematics.

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Why was Darwin so delighted by Bates’ discovery of mimicry? Because Darwin’s evidence supporting natural selected was based on observations of domestic animals, Bates provided Darwin with independent evidence of natural selection in nature.

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How did the geologist Charles Lyell influence Darwin? He suggested that slow, gradual changes shaped the features of Earth. What is the role of fossils in supporting the theory of common descent? There have been many fossils of intermediate types discovered that provide strong support for the theory of common descent.

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After a variety of zoological discoveries, Wallace proposed a theory of evolution which matched the unpublished ideas Darwin had kept secret for nearly 20 years. This encouraged Darwin to collect his scientific ideas and collaborate with Wallace. They published their scientific ideas jointly in 1858.

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It was Lyell’s book, but Hutton’s ideas, that inspired Darwin to incorporate the concept of an “ancient” mechanism that had been at work since the beginning of the Earth in his own world-changing book, “The Origin of the Species.” Thus, Hutton’s concepts indirectly sparked the idea of natural selection for Darwin.

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How did Lyell’s Principles of Geology influence Darwin? Lyell proposed that earth is extremely old and processes that changed the earth in the past are still at work today. This allowed for the great time span Darwin believed was necessary for evolution to occur.

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Darwin was influenced by other early thinkers, including Lamarck, Lyell, and Malthus. He was also influenced by his knowledge of artificial selection. Wallace’s paper on evolution confirmed Darwin’s ideas. It also pushed him to publish his book, On the Origin of Species.

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Erasmus Darwin Erasmus had his own thoughts about how species changed over time that he shared with his grandson. Instead of publishing his ideas in a traditional book, Erasmus originally put his thoughts about evolution into poetry form. This kept his contemporaries from attacking his ideas for the most part.

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Malthus wrote “Essay on the Principle of Population” (1798), which Darwin read and was inspired by. The central theme of Malthus’ work was that population growth would always overpower food supply growth, creating perpetual states of hunger, disease and struggle.

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How did Lyell’s ideas influence Darwin’s ideas on how living things changed over time? Just as Earth’s features could change gradually over long periods of time, changes in living things could result from the accumulation of many small changes over long periods of time. What was Malthus’s idea?

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Malthus’ Principle of Population caused Darwin to rethink many issues while coming up with his theory of natural selection. Malthus’ work made Darwin realize the importance of overpopulation and how it was necessary to have variability in different populations.

Where are cave dwellings still common today?

what important idea from thomas malthus inspired darwin? peter and rosemary grant observed natural selection acting on traits within a population of finches on the galapagos islands. a drought reduced the number of small soft seeds but left plenty of large, tough-shelled seeds intact.

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How did malthus’s ideas about human population growth inspire darwin’s thinking about evolution? Thomas Malthus predicted that the human population will grow faster than the space and food suples needed to sustain it.

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How did geologists Hutton and Lyell influence Darwin’s thinking? Hutton and Lyell presented the idea that the physical processes that formed Earth took place over very long periods of time and that those same processes still occur today.

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How did geological gradualism and uniformitarianism influence Darwin? Darwin stated that evolution through natural selection through gradual change from the environment. This is like uniformitarianism where things, that change, change at a constant rate.

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Charles Darwin is credited with suggesting that species evolve over time and that the mechanism by which they evolve is natural selection. Charles Darwin wrote a book called, “On the Origin of Species by Means of Natural Selection”.

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How does Darwin’s principle of descent with modification explain the characteristics of today’s species? Descent with modification explains why organisms living today may be different from their ancestors,for example, by having different structures.

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More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.

How long do cave divers stay underwater?

The core of Darwin’s theory is natural selection, a process that occurs over successive generations and is defined as the differential reproduction of genotypes. Natural selection requires heritable variation in a given trait, and differential survival and reproduction associated with possession of that trait.

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The Reagan administration implemented a new policy towards the Soviet Union through NSDD-32 (National Security Decisions Directive) to confront the USSR on three fronts: to decrease Soviet access to high technology and diminish their resources, including depressing the value of Soviet commodities on the world market; …

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How did Reagan end the Cold War? His rearmament programme.

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Soldiers of the Soviet Union and the United States did not do battle directly during the Cold War. But the two superpowers continually antagonized each other through political maneuvering, military coalitions, espionage, propaganda, arms buildups, economic aid, and proxy wars between other nations.

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Under the Reagan Doctrine, the United States provided overt and covert aid to anti-communist guerrillas and resistance movements in an effort to “roll back” Soviet-backed pro-communist governments in Africa, Asia, and Latin America.

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