Introduction To Evolution What is Evolution? Evolution is the process by which all living things have developed from primitive organisms through changes occurring over billions of years‚ a process that includes all animals and plants. Exactly how evolution occurs is still a matter of debate‚ but there are many different theories and that it occurs is a scientific fact. Biologists agree that all living things come through a long history of changes shaped by physical and chemical processes that
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The Chameleon‚ Chamaeleonidae‚ is a colorful reptile with a tail and tongue the length of their body. The chameleons extend their tongue roughly one and a half times‚ the length of their body providing them the skill to catch prey without having to move. Half the world’s population of Chameleons exist in Madagascar. (Raxworthy) According to the San Diego Zoo‚ over 150 diverse species of chameleons live in Yemen‚ Saudi Arabia‚ Africa‚ India‚ Middle East‚ Sri Lanka‚ and Southern Spain. Chameleons
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Physiological Adaptations of the Plesiosaur for Holding its Breath’ By Nathan Eaton One hundred and fifty million years ago‚ large aquatic species of reptile such as the Plesiosaur dominated the ocean‚ and were pre-eminent predators of the sea. The branch of now extinct Plesiosaurs‚ or near lizards’‚ evolved into variant closely related species specialised to take different niches in the food chain. Such species of Plesiosaur include the phenotypically similar Plesiosauroid and Pliosauroid
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Around 4.6 billion years ago‚ our universe was born by accretion from the solar nebula known as the Big Bang. As the sun heated up‚ this orbiting matter accumulated and unavoidable mass of larger bodies collide to successively create protoplanets with its own gravitational pull. During this period‚ Earth was nothing but molten rock from the collision with other bodies and volcanoes‚ temperature reaching over 2‚000 fahrenheit. Not only that‚ but Earth then‚ would’ve been toxic to humans and modern
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Were dinosaurs warm or cold blooded has been a long time debated issue. Scientist believe dinosaurs were much like modern day reptiles‚ cold blooded‚ and others believe dinosaurs were much like mammals and others birds‚ warm blooded. Dinosaurs are creatures that lived on Earth around 251 million years ago. Dinosaurs lived in the Mesozoic Era. This era contained three separate subsections: the Triassic Era‚ the Jurassic Era‚ and the Cretaceous. When the Mesozoic Era ended‚ most or a majority of the
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eumetazoa. Cambrian explosion=huge diversity of animal kingdom‚ different locomotion‚ different predator prey relations‚ hox gene evolution and O2 buildup. archenteron=deuterstome cartilege=condrifeus (?) amniotic egg and water-resistant skin=reptile reptiles successful in desert because of slow metabolism‚ ectothermic and scales snakes come from lizards internal fertilizaton=mammals‚ some sharks‚ birds
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crocodile or an alligator‚ you’d see a mouth full of serrated teeth that would likely frighten you. The two reptile groups are close relatives‚ so their physical similarities are expected. Besides being close relatives‚ crocodiles and alligators also share a common habitat and diet‚ while having physical differences as well as similarities. Alligators and crocodiles are not only both reptiles‚ but they both share a common ancestor (North Carolina Aquariums). They both belong to an animal family called
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Wild Animals as Pets “Between 13‚000 and 2‚500 B.C.‚ humans domesticated dogs‚ cats‚ cattle‚ goats‚ horses‚ and sheep from their wild counterparts. Although the terms taming and domestication are often used interchangeably‚ they are not the same. Individual wild animals can be tamed to behave in a docile manner around humans. By contrast‚ domestication is a process that takes place with an entire animal species over many generations.” (libraryindex.com) Humans began domesticating large animals
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Evolutionary biologists believe that birds evolved from reptiles. Their skeletal structure and blood cells of today’s birds share a surprising foundation with reptiles. According to biologists‚ feathers may have evolved from the scales of reptilian skin‚ also. From 144 million to 66 million years ago‚ during the Mesozoic era‚ the first birds began to evolve. Fossils from this time showed that early birds had teeth. Tens of millions of years ago‚ a group of birds called kites evolved. Early kites
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Brady Barr is a very famous herpetologist and is the host on Nat Geo WILD’s “Dangerous Encounters with Brady Barr.” He was born in Fort Worth‚ Texas‚ and was raised in Bloomington Indiana. Brady received a Bachelor of Science in science education from Indiana University in 1987 and launched his teaching career at North Central High School in Indianapolis‚ teaching subjects like zoology‚ biology‚ and earth and life sciences. In 1994 he went and received his masters degree and in 1997 he received a
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