Continental drift is the movement of the Earth ’s continents relative to each other. The hypothesis that continents ’drift ’ was first put forward by Abraham Ortelius in 1596 and was fully developed by Alfred Wegener in 1912. However‚ it was not until the development of the theory of plate tectonics in the 1960s‚ that a sufficientgeological explanation of that movement was found. |Contents | | [hide] | |1 History
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Introduction Mangrove swamps are a type of coastal wetland found on five out of seven continents between the latitudes 30ºN and 30ºS. Mangrove swamps are rich communities of both vegetative and animal species. The swamps are unique in the fact that they are a highly vegetated area found on the edge of marine coasts. The major vegetation in this area has adapted to absorb its water from the sea‚ and its oxygen from the air as opposed to the soil. This environment serves as home to many animal species
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INTRODUCTION Plate tectonics The large scale motions of the earth’s lithosphere are describe by a scientific theory called plate tectonics which explains that Earth’s outer layer is made up of plates‚ which have moved throughout Earth’s history. The theory was developed during first decade of 20th century (by a famous advocate Alfred Wegener) on the older concept of continental drift and was accepted by many geoscientific communities. There are currently seven major and many minor plates are
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Characteristics Skull of an Oriental giant squirrel (genusRatufa) - note the classic sciuromorphousshape of the anterior zygomatic region. Squirrels are generally small animals‚ ranging in size from theAfrican pygmy squirrel at 7–10 cm (2.8–3.9 in) in length and just 10 g (0.35 oz) in weight‚ to the Alpine marmot which is 53–73 cm (21–29 in) long and weighs from 5 to 8 kg (11 to 18 lb). Squirrels typically have slender bodies with bushy tails and large eyes. Their fur is generally soft and silky
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millions of years. This once ‘supercontinent’ was known as Pangea – which translates to ‘’All Earth’’. Pangaea started to break up into two smaller supercontinents‚ called Laurasia and Gondwanaland‚ during the Jurassic period. By the end of the Cretaceous period‚ the continents were separating into land masses that look like our modern-day continents. However‚ Wenger did not have the evidence to explain how these continents could move. Over the course of this essay I will review some of the evidence
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“How Flowers Changed the World” Questions and Answers 1. Eiseley states that observers from the far side of our solar system could have perceived only one change in the whole history of the planet Earth. Describe this change and explain what would have been responsible for it. a. Eiseley says they would be able to “discern a subtle change in the light emanating from our planet”. What Eiseley is talking about is the evolution of earth from a place with red deserts like Mars and blackness of naked
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There is certainly room for debate when building the definitive list of US museums for dinosaur lovers. Diversity of species‚ number of specimens‚ presentation‚ architecture‚ accessibility and interactivity are all factors in the museum experience. Fortunately‚ the United States offers a rich diversity of dinosaur museums sure to please everyone from the most casual dinosaur fan to the hardened paleontologist. These are the top five picks‚ plus some honorable mentions. American Museum of Natural
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family’s alligator‚ caimen‚ crocodile‚ and gharial. There are twenty-three species contained in this domain‚ and they are the closest living relatives to birds. This order had been in existence for the past 84 million years since the dawn of the Cretaceous period. The crocodilian species ranges in size from a four to five- foot Cuvier’s Dwarf Caimen‚ all the way up to the twenty-foot Saltwater Crocodile (which is actually the largest out of all extant reptiles). Species within this domain have an
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Biodiversity Hotspots The Caucasus: The Caucasus hotspot‚ historically interpreted as the area of land between the Black and Caspian seas‚ covers a total area of 580‚000 km. Located at a biological crossroads‚ species from Central and Northern Europe‚ Central Asia‚ the Middle East and North Africa mingles here with endemics found nowhere else. One of the most biologically rich regions on Earth‚ the Caucasus is among the planet’s 25 most diverse and endangered hotspots. The Caucasus is one
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University of the Philippines Diliman College of Social Sciences and Philosophy Department of Geography Final Paper in Geography 155 THE GREAT CENTRAL PLAINS Mary Angelie A. Pasion PHYSICAL BACKGROUND OF THE GREAT CENTRAL PLAINS General Information and Physical Background The North American Plains include the area from the Canadian boreal forest in the north to central Texas in the south and from the Rocky Mountain in the west to the Missouri River and the eastern boundaries of the
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