evolutionary path different from any other area land- no matter how similar their environments. It is widely accepted that between 260-180 million years ago‚ all of the Earth’s land was a part of one single large landmass called ‘Pangaea’. However‚ 180 million years ago Pangaea is believed to have split into two smaller ‘supercontinents’‚ with the land we call Australia connected to the southern landmass of ‘Gondwana’. This came as a result of the random movement of tectonic plates; the outer crust of
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1. Summarize advances over time in determining the age of the Earth‚ including the importance of the discovery or radioactivity. Herodotus counted layers of earth near the Nile River in 450 B.C.E. The Bible was used in the Middle Ages to compute the age of the Earth. The 18th and 19th centuries brought a more scientific look into determining the age of the Earth by studying the salinities of the oceans‚ the rates of sedimentation‚ and models of cooling of different materials in order to calculate
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ozone layer led to the signing of an international agreement (the Montreal Protocol). Anthropocene: Geological epoch defined by atmospheric chemist Paul Crutzen to acknowledge the central role humans play in shaping the Earth’s environment. Pangaea: The primeval supercontinent‚ hypothesized by Alfred Wegner‚ that broke apart and formed the continents and oceans as we know them today; consisted of two parts- a northern Laurasia and a southern Gondwana. Tectonic Plates: Large pieces of rock
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Task 9: Mass Extinctions Introduction: In this report I will talk to you about the 5 mass extinctions that have happened on earth over the past 434 million years. I will also talk to you about the effects of the current mass extinction. The last things i will show is a list of 10 recently extinct species and 10 endangered species. Number 1: The Ordovician Silurian Extinction This extinction happened about 439 million years ago‚ because of a drop in sea levels as glaciers formed. An ice age has been
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The initial theory of continental drift was put forward by a German meteorologist Alfred Wegener in 1915. This theory did not seem credible until it was connected with the plate tectonic theory in the mid 1960’s. The Tectonic plate theory had an advantage over previous predictions as it could be supported by observed occurrences. One such thing that supports these two theories is that seen from space the continents look as if they might once have been joined together. This possible idea was then
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NOVA: Australia’s First 4 Billion Years NOVA’s four part videos "Australia’s First 4 Billion Years" takes viewers on a rollicking adventure from the birth of the Earth to the emergence of the world we know today. With help from host and scientist‚ Richard Smith‚ we meet titanic dinosaurs and giant kangaroos‚ sea monsters and prehistoric crustaceans‚ disappearing mountains and deadly asteroids. The visuals (both real and computer-generated) are beautiful‚ and the stories are clearly and engagingly
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German meteorologist Alfred Wegener wasn’t the first to perceive similitude’s right around the landmasses that recommended the landmasses may have once been associated. He began with‚ be that as it may‚ to assemble brainstorms and confirmation into an obvious theory‚ which he transformed into a treatise entitled "The Framing of the Major Emphasizes of the Earth’s outside layer (Landmasses and Seas)." In 1912‚ at experience 32‚ Wegener should have appeared a bald-faced upstart to the regarded parts
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find out about ancient and pre-contact Americans; better to abbreviate and oversimplify this history than to ignore it. II. The First Americans A. African and Asian Origins 1. Pangaea and Continental Drift—Before human evolution‚ continents of North and South America were detached from the common landmass of Pangaea. About 240 million years ago‚ continental drift pushed the landmass apart‚ allowing oceans to surround land much like our current geography. 2. Homo Sapiens—Modern humans‚ Homo sapiens
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Geology 101 Lab: Plate Tectonics Goals of this lab: -to learn about types of Plate Boundaries -to learn about Plate Boundary Interactions -to familiarize yourself with the Plate Tectonic Map of the World -to understand and familiarize yourself with past Plate Movement and the supercontinent Pangea -to understand the Hot Spots of Hawaii and Yellowstone Part 1. Types of Plate Boundaries There are 3 types of plate boundaries and a fourth called a “plate boundary zone” in which the type of
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Associate Program Material Mineral Lab Worksheet Assignment: Mineral Lab | 70.0 | 70.0 | Comment: Good work. You identified all the minerals and did very well with that and the reasoning behind them. You also did very well on the evolutionary processes‚ as far as geological evolution of the earth. Great job! | Remove the above or just copy everything below which are the correct answers but Part 2 and 3 Needs to be in your own words
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