fern forests which will eventually become coal 250‚000‚000 years ago-First mass extinction of life forms (the Permian-Triassic extinction) 220‚000‚000 years ago-Dinosaurs evolve 200‚000‚000 years ago-First mammals and birds 130‚000‚000-First flowering plants 65‚000‚000-Second mass extinction (cretaceous-Tertiary Extinction.) Dinosaurs die out. 45‚000‚000 years ago-First modern mammals 35‚000‚000 years ago-First grasses 3‚000‚000 years ago-First hominids (Australopithecus) 200‚000 years ago-First
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READING MATERIAL 1. Explain the three hypotheses for the recent changes in the toxicity of venom in different species of rattlesnakes found in the United States. - Interbreeding between snakes with different venom profiles. - Geographic distribution (genes shifted eastward) - Convolution - Old rattlesnakes have high concentration of toxic. 2. What is an “evolutionary arms race”? Describe how this applies to one of the hypotheses suggested to explain toxicity of venom in rattlers
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veryone feels the need to escape once in a while. To escape means to try to get away from the everyday trauma’s that occur. In the story Horses of the Nigh” by Margaret Lawrence‚ the character Chris constantly escapes reality. The author is suggesting that the effect of escaping from the reality of life too a great extent‚ can lead to dire consequences. The need to escape reality is shown through symbols. Certain symbols can emphasize the need of the character‚ Chris‚ to escape from the reality
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opportunities. Eckels is going back in time to hunt dinosaurs. Mainly the Tyrannosaurus rex. When the group arrives at the jungle of sixty million two thousand and fifty five years before President Keith‚ Travis tells the group about the consequences of stepping off the path. As the hunters are on their journey‚ Eeckels steps off the path and kills a butterfly. Travis is furious with Eckels and threatens to leave Eckels in the past with the dinosaurs. When they get back to 2055 the world has changed
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Damian James 2/5/14 Science 200 Short Answers 1. According to the church‚ the age of the earth was 6‚000 years old. 2. James Hutton discovered that the earth was much older from the tilted rocks because he knew these rocks was once laid down horizontally on the sea floor and were buried under great depth to be crystalized. Then they were tilted on end by great
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Ancient Life of the Great Lakes Basin: Precambrian to Pleistocene 2011 [Pick the date] Table of Contents I. Introduction 3 II. History of the Great Lakes Basin 3 III. Precambrian Period 3 IV. Ordovician Period 4 V. Silurian Period 4 VI. Devonian Period 4 VII. Pennsylvanian Period 4 VIII. Mississippian Period 4 IX. Lost Interval 5 X. Ancient Life of the Great Lakes Basin: Precambrian to Pleistocene The purpose of this report is to provide an
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cloning‚ reviving extinct species! Have you ever wanted to be face to face with a real life‚ breathing dinosaur? That may not be the smartest idea‚ but in theory‚ cloning would make this possible. You would need a well preserved DNA from the dinosaur and a currently living‚ closely related species as an egg donor/surrogate mother. In realty? No.. It is extremely unlikely that DNA from dinosaurs could survive unharmed for such a long amount of time. Cloning extinct animals may be a harder thing to
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condition may be physical- temperature‚ rainfall‚ sea level and landforms e.g. Peppered Moths chemical- water salinity‚ acidity‚ use of pesticides‚ oxygen levels e.g. DDT mosquitoes competition for resources - food‚ water‚ shelter and mates e.g. dinosaurs and mammals Evidence for evolution Palaeontology- study of fossils Fossil record of organisms illustrates a clear change from simple to very complex organisms. They provides evidence that living organisms have changed over time.
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Fossil fuels and minerals go as far back as hundreds of millions of years ago. That is before the dinosaurs. Fossils fuels were formed in the Carboniferous Period. The Carboniferous Period occurred about 300 million years ago. In this period our Earth was covered in a swampy plant life. Lots of algae and big leafy plants covered the earth. When these plants died at the bottom of these swamps and lakes ‚they formed something called peat. Then new rock was formed on top of the peat called
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The Bible does not acknowledge the apparent creation of dinosaurs nor does it mention evolution. Evolution is the process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth - this plausible theory came from Charles Darwin a naturalist and
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