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CLASS 6 GEOGRAPHY, QUESTION ANSWER

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C. 1. Asia is the largest continent and Australia is the smallest., 2. The Atlantic Ocean has a highly indented coastline. This has led to the formation of many natural ports and, harbours., 3.This is because nearly 95% of the continent is covered by ice and snow and it has extremely cold, temperatures., 4.The eastern coast of South America and the western coast of Africa look like they would fit together. similar, animals and plants are found in both the regions. Fossils of the same reptiles., 5. The sial is the continental crust of the lithosphere and the sima is the oceanic crust.It is thicker under the, mountains. It is made up of silica and alumina. It is much thinner than the sial, with an average thickness of just, 6 km. It is made up of silica and magnesium., D.2.Biosphere contains all the three elements that support life which are the lithosphere, the hydrosphere and, the atmosphere., 3. The different features that we find on the lithosphere are continents, mountains, plateaus, hills, valleys,, canyons and so on., 4. Asia and Europe form a continuous land mass and Eurasia is the name given to this land mass., Asia–Africa are joined by the Isthmus of Suez and North America–South America are joined by the Isthmus of, Panama

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D.5. Ninety-five percent of Antarctica is covered by ice, it has extreme, temperatures and the only life forms it supports are a few animal and, plant forms that have adapted to the climate and terrain. Hence human, habitation is not possible on Antarctica.