Decent,with,Modification-,Darw education Decent with Modification- Darwin
Translation jobs are undertaken by professional translators who are well versed with at least two languages.Translation can work at two levels: inter-state or regional language translation and inter-national or foreign language translation. Some forms of parent involvement with the school such as communications with school, volunteering, attending school events and parent--parent connections appeared to have little effect on student achievement, especially in high school. Helpi
Darwin Introduces a Revolutionary Theory A new era of biology began on November 24, 1859,the day Charles Darwin published On the Origin of Species by Means ofNatural Selection The Origin of Species focused biologistsattention on the great diversity of organisms Darwin made two major points in his book: Many current species are descendants ofancestral species Natural selection is a mechanism for thisevolutionary processResistance to the Idea of Evolution The Origin of Species Shookthe deepest roots of Western culture Challengeda worldview that had been prevalent for centuries The Greek philosopher Aristotle viewed speciesas fixed and unchanging The Old Testament holds that species wereindividually designed by God and therefore perfect Carolus Linnaeus interpreted organismaladaptations as evidence that the Creator had designed each species for aspecific purpose Linnaeus was a founder of taxonomy, the branchof biology concerned with classifying organismsFossils, Cuvier, and Catastrophism The study of fossils helped to lay thegroundwork for Darwins ideas Fossils are remains or traces of organisms fromthe past, usually found in sedimentary rock, which appears in layers or strata Paleontology, the study of fossils, was largelydeveloped by French scientist Georges Cuvier Cuvier advocated catastrophism, speculating thateach boundary between strata represents a catastropheTheories of Gradualism Gradualism is the idea that profound change cantake place through the cumulative effect of slow but continuous processes Geologists Hutton and Lyell perceived thatchanges in Earths surface can result from slow continuous actions stilloperating today This view strongly influenced Darwins thinkingLamarcks Theory of Evolution Lamarck hypothesized that species evolve throughuse and disuse and the inheritance of acquired traits The mechanisms he proposed are unsupported byevidenceThe Voyage of the Beagle During his travels on the Beagle, Darwincollected specimens of South American plants and animals He observed adaptations of plants and animalsthat inhabited many diverse environments His interest in geographic distribution ofspecies was kindled by a stop at the Galápagos Islands near the equator west ofSouth AmericaDarwins Focus on Adaptation In reassessing his observations, Darwinperceived adaptation to the environment and the origin of new species asclosely related processes From studies made years after Darwins voyage,biologists have concluded that this is indeed what happened to the GalápagosfinchesDescent with Modification The phrase descent with modificationsummarized Darwins perception of the unity of life The phrase refers to the view that all organismsare related through descent from an ancestor that lived in the remote past In the Darwinian view, the history of life islike a tree with branches representing lifes diversitySurvival of the Fittest Individuals with characteristics that are notwell suited for their environment either die or leave few offspring. Darwin called this natural selectionArtificial Selection In artificial selection, humans have modifiedother species over many generations by selecting and breeding individuals withdesired traitsSummary of Natural Selection Natural selection is differential success inreproduction from interaction between individuals that vary in heritable traitsand their environment Natural selection produces an increase over timein adaptation of organisms to their environment If an environment changes over time, naturalselection may result in adaptation to these new conditionsWhat Is Theoretical about the Darwinian View of Life? In science, a theory accounts for manyobservations and data and attempts to explain and integrate a great variety ofphenomena Darwins theory of evolution by naturalselection integrates diverse areas of biological study and stimulates many newresearch questions
Decent,with,Modification-,Darw