After perusing the article “Easter’s End (1995: 62-69) by Jared Diamond”‚ I have learnt that the past Polynesian civilization on Easter Island was severely dismantled due to introduction of foreign species‚ overpopulation‚ continued deforestation and extraction of natural resources. The author implied that we might succumb to a similar consequence if our ecological hazards continuously being ignored. This article is mainly about the factors that cause the extinction of the former civilization on
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Microraptor Gui is 77 cm in length and has four wings. What’s different about this species is that it has a wing on each of its hind limbs. On January 23 in the issue of the journal Nature‚ Xu Xing‚ a paleontologist at the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing‚ China‚ says that in the the species was an early ancestor of birds that most likely used its feathered limbs‚ along with its long feather-fringed tail‚ to soar from tree to tree. The dominant life in the Cretaceous
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of the function of cells •Histology – study of plant and animal tissues •Biochemistry – study of the molecules within the cell 6. Evolutionary Biology -study of the change in organisms over time -has three subcategories: •Paleontology – study of fossils •Taxonomy – study of evolutionary interrelationships among organisms •Embryology – study of development of organisms
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Science is an organized body of knowledge supported by observation and experimentation‚ derived from the natural phenomena of the entire material universe. Biology had flourished a great deal in ancient India. Various systems of classifying animals and plants were developed‚ for example Jeevaj (Viviparous) animals that give birth to young one‚ Andaj (Oviparous) animals that lay eggs‚ etc. Cultivation of rice was first introduced in India. It is estimated that more than 1000 varieties of rice had
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Introduction The Forest Hill Formation is a geological area that mainly stretches from west-central to southeastern Mississippi‚ but thins right at the border of and barely touches Clarke County‚ Alabama (Echols‚ et al.‚ 1893). Geologist Ephraim Nobel Lowe originally proposed the name Madison Sands for this formation‚ due to the fact that he had studied it in Madison County‚ Mississippi. The name was later changed to Forest Hill by Charles Wythe Cooke. The Forest Hill Formation overlies the Red
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In Milan‚ Leonardo sought and gained the patronage of Ludovico Sforza‚ and soon began work on the painting Virgin of the Rocks. After some years‚ he began work on a giant bronze horse‚ a monument to Sforza’s father. Leonardo’s design is grand‚ but the statue was never completed. Meanwhile‚ he was keeping scrupulous notebooks on a number of studies‚ including artistic drawings but also depictions of scientific subjects ranging from anatomy to hydraulics. Leonardo da Vinci’s embryological
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As they searched more‚ Johanson and Gray found a jaw bone‚ thigh bones‚ ribs‚ and vertebrae. After about 3 weeks Gray and Johanson concluded that about 40 percent of the skeleton was recovered. This would prove to be a groundbreaking step for paleontology. For the record the correct identification for this discovery was AL-288-1 (Afar Locality #288)‚ but was later renamed "Lucy." It was named Lucy after the Beatles song "Lucy in the sky with diamonds"‚ which Johanson was listening to when he discovered
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Paleontology Cnidaria and Nematocysts Cnidaria‚ also called Coelenterata‚ is a large phylum of marine organisms with around 10‚000 species. These species are corals‚ jellyfish‚ various plant-like organisms‚ as well as many others. These are all very different from each other‚ except for one similar attribute. They all have Nematocysts‚ which are stinging cells used by all Cnidaria for either defense or hunting. Nematocysts have a variety of functions to fulfill these tasks. The organism can use
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Darwinism under the microscope one of the men‚ Mark Hartwig‚ Ph.D. states in the book that there is no convincing data supporting evolution and when Darwin wrote his book he knew there wasn’t evidence to support his theory but he believed once paleontology became more developed the “intermediate links” would be found. Still after many years this still hasn’t happened. James P. Gills‚ M.D. states: Based on detailed observation of living things‚ I had come to feel the intellectual tension between polar
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discipline concerned with naming and classifying the diverse forms of life Fossils: preserved remains/impressions of an organism that existed in the past Sedimentary rock: (strata) superimposed layers of rock that often times carry fossils. Paleontology: the study of fossils Catastrophism: principle that events in the past occurred suddenly and were caused by different mechanisms than those today Uniformitarianism: principle stating that mechanisms of change are constant over time Descent
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