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Evolution of turtles essays
Evolution of turtles essays
Evolution of turtles essays
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INTRODUCTION
Evolution is a process of living things change slowly in a very long time, so it evolved into a new species more complete body structure. According to the theory of evolution, living now in contrast to living in the past. The ancestors of creatures alive today may experience changes in form and structure. In addition, may experience changes in both the structure and genetics in a very long time, so the shape was totally different from the original and finally generate different types of species present. So the plants and animals living there now was not the first time here on earth, but it comes from living in the past.
There evolutions have two types, which are the progressive and regressive evolution. Progressive evolution means
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CONCLUSION
Turtles are one of the forms of life that are very suitable for assessed the evidence for evolution, this is not caused by the skin very easily taken care of but because there are many turtle fossil record. Simply there is no evidence to support that the turtle evolution of the ancestors even though it has been more than a century of fossil exploration area and identifies thousands of fossils.
Turtles are reptiles that are very different from others because of its uniqueness that can be practically useless as a guide to distinguish between potential ancestors, and the origin of the turtle remains one of the unanswered questions of evolutionary biology. There were possibilities that the options for the turtles were almost the entire range of turtle reptile, living and extinct.
The original turtle has long been, and continues to be, a major evolutionary enigma. The oldest turtle clearly identified the turtle. Since turtles appear suddenly in the fossil record, the latest data is not changed with the creation of the event is followed by diversification and
What is evolution? Evolution in modern terms is fairly easy to understand. Evolution is the theory that life on earth began with a single celled organism that lived more that 3.5 billion years ago that slowly evolved into many diverse creatures over time. When you break down this theory into sections you get 6 factors: evolution, gradualism, speciation, common ancestry, natural selection and nonselective mechanisms of evolutionary change.
First, here are some basic facts about turtles: turtles are cold-blooded, which means that they cannot raise or lower their body temperature. Their body temperature reflects the temperature of the surrounding air or water. Turtles date back to around two hundred million years ago. Having over forty nine species of turtles, they can live both in water and on land. The top shell, referred to as carapace, of land a turtle are over-grown and makes the ribs wider. Beneath the top shell is the lower shell, referred to as plastron. Both of the shells protect the turtle from other animals and their environment. Thus, turtles have developed long necks and an unusual way of getting air in and out of their lungs. A turtle’s neck forms a tight S-shaped bend, and the curve becomes shallow as the neck extends (Smith and Zim, 18). Also, having modifying their bodies, turtle legs are attached within their ribs. The unique structure of turtles has made them long-lived and unusual specie.
Musick, John A. Biology of Sea Turtles. Ed. Peter L. Lutz. Boca Raton, Fla: CRC, 1997.
While in graduate school, Stephen Gould met fellow graduate student Niles Eldredge and they both began to study the many snail fossils. In a New York Times article Stephen Jay Gould, 60, is Dead; Enlivened Evolutionary Theory (2002), it is stated that “the two students could not find the gradual, continuous change in fossil forms that they were taught was the stuff of evolution. Instead they found sudden appearances of new fossil forms followed by long periods in which these organisms chang...
The more we learn about Painted turtles and all forms of life the closer we get to understanding ourselves and the way that we came to be. Nature continues to astound us with the solutions to new problems. Within these little turtles may be the answer to cryogenics, or to frostbite. There are innumerable bonuses to every new bit of information that we learn. While we may never learn all there is to know, we can know more.
Evolution is the gradual, continuous change of characteristics throughout a population or a species over many generations. It is the moderation of characteristics that can alter an entire population over a long period of time and is the theory that explains the variation in each generation of an organism.
Remaining on topic, the authors provide sufficient evidence by stipulating pictures of dinosaurs and birds. Additionally,
The odontochelys preferred a similar habitat to the modern green sea turtle, in the shallow waters along different coastlines. Unlike the ancient green sea turtles, the younger modern day green sea turtles venture off into the deeper parts of the ocean and the adults stay near shore. Some of the original structural characteristics before any adaptation changes are: the row of sharp teeth on the top and bottom of the jaw and the stomach shell. Scientist suggests that these physical features were from the different types of prey that they needed to catch and because living on land exposed their stomachs, so they needed more protection from rocks and animals attacking them from underneath. Common behavior of todays green sea turtles are to only stay on land to bask in the sun and to lay eggs. The Odontochelys spent more than 50% of their time on land due to the lack of food in the shallows of the water and because most of the food sources were on land. One of the physiological adaptations of the Odontochelys, was adaption of the partial hard shell on top of it’s back. The pressures of nature forced this species to evolve into the different sea turtle species because of vulnerability of its back and because of the changes in availability of food. The Odontochelys had to spend more time in the water to either to escape from land predators or because they could no
Today, seven species of sea turtle deem the ocean as their home. These gentle creatures have thrived on earth since the dinosaurs roamed the lands (some 110 million years ago); yet in recent years, six of the seven species have become critically endangered or vulnerable to endangerment (wwf 2016). This result is in direct correlation with the negative impact human beings have inflicted, and continue to inflict, upon the planet. It’s no coincidence that the population of sea turtles has plummeted as the human population has risen, for along with the expansion of humans comes the expansion of consumerism, which is ultimately the root of devastation for the sea turtles. Human beings could substantially reduce their negative impact on these innocent
When a species is threatened by extinction it falls under the category of being an “endangered species.” Each species has different threats which affect their survival rate. Many species may be affected by loss of habitat or loss of genetic variation (Society). However, other reasons exist and are prominent as well such as egg collection and unintentional capture when operating fishing equipment. There is class of sea turtle that is the rarest species of sea turtle, the smallest species of sea turtle, and the most critically endangered sea turtle in the world (Fisheries).
...emale leatherback turtle and her habits in order to fully understand this critically endangered marine animal.
What is evolution and how does it work? Evolution is the theory of how one form of life changes into another form. Evolution also is the change in a population’s inherited traits from generation to generation. Evolution helps to explain why an animal, human, and plant looks the way it does and acts the way it does; it gives an explanation of the history of life. Genes come in many varieties, and the evolution helps to make it happen.
Sea turtles are included as one of the many endangered animals in the world, yet not many people are aware of this. Therefore people should be informed about sea turtles characteristics, reproduction system and also learn about past incidents that has harmfully affected the sea turtles.
With his he saw that each finch had different variations of beaks to match the environment they live in. evolution is defined as the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth. The greeks and medieval used it as a descriptive term of technology for nature. Scientists have found fossils of human skulls that have shown that our ancestors had evolved with their journey out to other
In ‘NOVA LABS; The Evolution Lab,’we found that creating a phylogenetic tree can show how different species are related to each other. This means that history can prove the species change over time because one branch represents a single species that had a speciation. When a speciation occurs, over time, more branches appear with more species on each, which makes the tree have more biodiversity. In ‘The Stickleback Fish - A Story of Modern Evolution’ activity, it states, “The Three-Spined Stickleback is a model organism for studies in evolution.” This means that history can prove the species change over time because the Three-Spined Stickleback fish has a short enough lifespan for biologists to breed and create genetic crosses between vastly different looking individuals. In the ‘Comparative Anatomy’ activity, we found that when looking at two different species, you can see how they are related because of certain traits they both possess. This means that history can prove that species change over time because similar and exact traits show that two or more species are related and how, over time, these two species have changed. In conclusion, species change over time because fossil records, relative dating, carbon dating, and uranium dating can all help improve the geological