Climate change Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions‚ or in the distribution of weather around the average conditions (i.e.‚ more or fewer extreme weather events). Climate change is caused by factors that include oceanic processes (such as oceanic circulation)‚ variations in solar radiation received by Earth‚ plate tectonics and
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Article Summary Effects of earthworms on soil Earthworm is the common name for the largest members of Oligochaeta in the phylum Annelida. They combine bilateral symmetry and corresponding external and internal segmentation. This phylum consists of more than 17‚000 modern species of worms including earthworms‚ ragworms‚ and leeches. They are found in marine environments from tidal zones to hydrothermal vents‚ in fresh water‚ and in most terrestrial environments. They generally do not occur
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Tundra Biome There are two types of tundra ecosystems: the arctic tundra and the alpine tundra. The tundra biome has several unique characteristics. The climate is very cold there is little diversity‚ and a "short season of growth and reproduction occurs" (1). The Finnish word tunturia‚ which means treeless plain‚ was the inspiration for the words tundra (4). The formation‚ plants‚ and animals that are associated with this biome have several attributes that make them remarkable‚ and this biome is
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extinction of flora and fauna‚ social conflict‚ and climate change‚ challenges that are not just local‚ but global. At the current rate of deforestation‚ the world’s rain forest may completely vanish in the next century (Lindsey‚ 2007). Jungle burned for agriculture in southern Mexico. (By Jami Dwyer via Wikimedia Commons) Deforestation has many negative effects on the environment. The most dramatic impact is a loss of habitat for millions of species. Seventy percent of Earth’s land animals and plants
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Next to water and air‚ soil is most essential to our very existence on the earth. Soils are the basis of support for most life‚ and a source of nutrients for marine life and fresh water. As a natural resource‚ soil is of immense value to man. In the agricultural orient the distribution and density of population have conformed to the persisting patterns of soil fertility and productivity. Soil is basically broken-down rock materials and consists of decomposed rock debris and decayed organic
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While the nature takes from 100 to 400 years to build one centimetre of top soil‚ man can and often does destroy it almost overnight by haphazard land use and improvident husbandry. Irrational methods of cultivation‚ deforestation‚ destruction of natural vegetation due to overgrazing by pasturing animals etc.‚ accelerate denudation. Besides‚ failure of rains‚ floods‚ depopulation and loss of cattle caused by famine and pestilence‚ disturbance caused by war and interference with or change
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extreme form of soft soil. It is an organic soil which consists more than 75% of organic matters. However‚ the cutoff value of the percentage of organic matter necessary to classify a superficial deposit or soil as peat varies throughout the world‚ usually depending on the purpose of classification. This cutoff value also serves to differentiate peat from superficial deposits or soils with lesser amounts of organic content. The terms peat and organic soils‚ used for describing soils with an organic content
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Human actions and behaviour towards the polar biome have a had major impact on the geographical processes operating within this environment. The polar biome can be situated in either the North or South Pole. Some of the human impacts currently in Antarctica are tourism‚ Climate Change and Invasive species due to this there is been dramatic changes to food webs and the environment itself. In Antarctica temperatures are extremely low with an average annual temperature ranging from -10°C to -80°C in
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TYPE OF SOIL THAT PRODUCES THE FASTEST RATE OF DEGRADATION ON FOOD SCRAPS Group 1 I-(1) Sr. Digna Schacht #1 Arianne Agojo 2 Patrizia Anog 3 Reaya Aquino 4 Mikaella Asoy 5 Joselle Asuelo St. Theresa’s College of Quezon City High School Department First Year School Year 2011-2012 Chapter I: Introduction Our group wants to know the type of soil that would produce the fastest rate of degradation of food scraps. The result of turning food scraps and organic garden waste into
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There are several different types of governments in this world. The United States run on a democracy. To have a successful democracy there needs to be a strong civil society‚ widespread education‚ active citizen participation‚ a social consensus and a favorable economy. The three most important of these five are having a favorable economy‚ widespread education and a strong civil society. The economy is an important factor of a government. Since the U.S has a government‚ like Abe Lincoln said
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