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Biology The necks of giraffes primitive probably were of various lengths, and these variations were of genetic origin. The giraffes with longer necks could harvest the leaves more easily than those of short neck. Thus, there is a natural selection among these beings favoring the survival of long-necked giraffes. This classic example of the giraffe also used didactically for many years, seeks to represent the theory of evolution by natural selection. ACTIVITY With the information provided by the text answer: What factors are necessary to allow the balance of species in ecosystems? The environment influences the evolution of species? What is a species? Darwin made a trip in 1831 to South America, the Galapagos Islands, among other regions. During this trip he made many observations, annotations and samplings of some fossils of different varieties of living species. After his return, in 1837, examined the immense material collected which made him very happy, because he believed that perhaps could be very close to clarify the mystery of the origin of species. The Galapagos giant tortoises (Geochelone elephantopus or Goechelone nigra) are reptiles Testudinidae family, endemic to the Galapagos archipelago. They are also turtles that have large dimensions and so sometimes referred to as giant turtles. These animals can measure more than 1.80 m in length and weigh over 225 kg. The jabutisgigantes Galapagos are herbivores and feed on creeping herb, fruit, leaves and cacti. Animals are extremely slow moving at a speed of 0.25 km / h. Source: GNU Free Doc License, www.wikipedia.org SEARCH Do a search in the books of biology on the observations of Darwin on the voyage aboard the ship Beagle. HMS Beagle in Australia (center), watercolor painted by Owen Stanley in 1841. The work of Charles Darwin during the Beagle expedition made it possible to study the geology, fossils, the magnitude of living organisms, the native people of the places where the Beagle passed. Methodically collected an enormous number of specimens, many new to science, which established his reputation as a naturalist and made him one of the precursors of ecology. Source: Photo Archives Project Gutenberg Literary Foundation. The snakes crawl why not have legs or they do not have legs for crawling?
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Biologija Vrat žirafe primitivnih vjerojatno su različitih duljina, a ove varijacije su genetskog podrijetla. U žirafe s dužim vratovima mogao žetvu lišće lakše od onih kratkom vratu. Dakle, postoji prirodna selekcija među tim bićima koji pogoduju opstanku dugovrate žirafe. Ovaj klasičan primjer žirafa također koristi didaktički dugi niz godina, nastoji zastupati teoriju evolucije prirodnom selekcijom. AKTIVNOST S informacijama koje je tekstualni odgovor: Koji faktori su potrebne kako bi se omogućilo ravnotežu vrsta u ekosustavima? Okolina utječe na evoluciju vrste? Što je vrsta? Darwin je napravio izlet u 1831 do Južne Amerike, Galapagosa, među ostalim regijama. Tijekom ovog putovanja je napravio mnoge primjedbe, komentare i uzorkovanja nekih fosila različitih sorti vrsta živih bića. Nakon povratka, u 1837, ispitao ogromnu materijal prikupljen što ga je učinilo vrlo sretan, jer je vjerovao da je možda mogao biti vrlo blizu razjasniti misterij podrijetla vrsta. The Galapagos div kornjače (Geochelone elephantopus ili Goechelone nigra) su gmazovi Testudinidae obitelj, endem Galapagos arhipelag. Oni su također kornjače koje imaju velike dimenzije i tako se ponekad naziva Divovske kornjače. Ove životinje može mjeriti više od 1,80 m dužine i težiti preko 225 kg. Jabutisgigantes Galapagos su biljojedi i hrane na puzanje biljke, voće, lišće i kaktusima. Životinje izuzetno sporo kreće brzinom od 0,25 km / h. Izvor: GNU Free License Doc, www.wikipedia.org TRAŽI Ne traži u knjigama biologije na promatranjima Darwin na putovanje na brodu Beagle. HMS Beagle u Australiji (u sredini), koju je naslikao akvarel Owen Stanley u 1841. Rad Charlesa Darwina tijekom ekspedicije Beagle napravio to moguće studirati geologiju, fosile, magnitude živih organizama, domorodaca mjestima gdje Beagle prošlo. Planski prikupljeni ogroman broj jedinki, mnogo novih za znanost, koji je uspostavio svoj ugled kao prirodoslovac i učinio ga jednim od prekursora ekologije. Izvor: Foto Arhiva Projekt Gutenberg Književna zaklada. Zmije puzati zašto ne imati noge ili nemaju noge za puzanje?