Essay 4: explain what is meant by the term species. How might a single species become two separate species? A species is a group of similar organisms that can breed together to produce fertile offspring. A species is a basic unit of classification. Members of singles species have certain things in common. Firstly they are similar to one another but different from members of other species. They have similar genes and therefore closely resemble one another physically and biochemically. They
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attract mates or prey. Fireflies produce a "cold light"‚ with no infrared or ultraviolet frequencies. This chemically produced light from the lower abdomen may be yellow‚ green‚ or pale-red‚ with wavelengths from 510 to 670 nanometers.[2] About 2‚000 species of firefly are found in temperate and tropical environments. Many are in marshes or in wet‚ wooded areas where their
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Speciation essay A species is a group of organisms that can breed together to produce fertile offspring. New species arise in two ways‚ hybridisation and polyploidy. Polyploidy is an increase in the number of sets of chromosomes. Hybridisation is the production of offspring from parents of two different species‚ this means though that the offspring is not fertile such a mule‚ a cross between a horse and a donkey‚ which is why hybridisation can only be explained in plants and not animals.
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planet and has undergone continuous change since its formation. It is a planet dominated by the presence of liquid water. Throughout its long history‚ the Earth has evolved from a lifeless world into one that is populated by an uncountable number of species. Based on radiometric dating analyses of moon rocks and meteorites‚ the Earth is believed to be about 4.5 billion years old. Many scientists believe that the Earth originated as a cold‚ undifferentiated body that internally heated up from the energy
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sahyadrensis Binomial name Nasikabatrachus sahyadrensis Biju & Bossuyt‚ 2003 Distribution of Nasikabatrachus (in black) Nasikabatrachus sahyadrensis is a frog species belonging to the family Sooglossidae. It can be found in the Western Ghats in India. Common names for this species are Purple Frog or Pignose Frog. It was discovered in October 2003 and was found to be unique for the geographic region. Contents [hide] 1 Description 2 Distribution
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http://www.nap.edu/catalog/12161.html We ship printed books within 1 business day; personal PDFs are available immediately. Origin and Evolution of Earth: Research Questions for a Changing Planet Committee on Grand Research Questions in the Solid-Earth Sciences‚ National Research Council ISBN: 0-309-11718-6‚ 200 pages‚ 8 1/2 x 11‚ (2008) This PDF is available from the National Academies Press at: http://www.nap.edu/catalog/12161.html Visit the National Academies Press online‚ the authoritative
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Cited: "Evolutionary Origin of Mitochondria." http://www.ruf.rice.edu. N.p.‚ May 2005. Web. March 26. Genetic Science Learning Center. "The Evolution of the Cell." Learn.Genetics 25 March 2012 http://learn.genetics.utah.edu/content/begin/cells/organelles/ "History of Life."
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Historical Development of Volleyball On February 9‚ 1895‚ in Holyoke‚ Massachusetts (USA)‚ William G. Morgan‚ a YMCA physical education director‚ created a new game calledMintonette as a pastime to be played (preferably) indoors and by any number of players. The game took some of its characteristics from tennisand handball. Another indoor sport‚ basketball‚ was catching on in the area‚ having been invented just ten miles (sixteen kilometers) away in the city of Springfield‚ Massachusetts‚ only four
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DISCOVERY OF FIRE The largest technological breakthrough in prehistory was the discovery of fire. The discovery of the technology to make and sustain fire. The discovery of fire‚ or‚ more precisely‚ the controlled use of fire was‚ of necessity‚ one of the earliest of human discoveries. Fire ’s purposes are multiple‚ some of which are to add light and heat‚ to cook plants and animals‚ to clear forests for planting‚ to heat-treat stone for making stone tools‚ to burn clay for ceramic objects. Until
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There was a time‚ many‚ many years ago‚ when rice was not known to our people. At that time our ancestors lived on fruits‚ vegetables‚ birds‚ and wild animals which they caught while hunting in the mountains or the forests. Tilling the soil was still unknown. And poultry and hog was not yet a part of their way of living. Because our people depended on the food which nature provided and not what they themselves grew or raised‚ their stay in one place was only temporary. When there was nothing more
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