Conservation is the practice of protecting plants or animals‚ and their habitats. These plants and animals may be very close to extinction. North America experienced a big loss of megafauna at the end of the Pleistocene era (about 13 000 years ago). This started a program known as “Pleistocene re-wilding”. Re-wilding involves the reintroduction of extant species into areas where they became extinct in the past. This program aims to restore the evolutionary and ecological potential that North America
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Soil is an important natural resource that covers much of the earth’s land surface. All life on earth depends on the soil as a direct or indirect source of food. Plants are rooted in the soil and obtain nutrients (nourishing substances) from it. Animals get nutrients from plants or from animals that eat plants. Certain microbes in the soil cause dead organisms to decay‚ which helps return nutrients to the soil. In addition‚ many kinds of animals find shelter in the soil. Soil contains mineral
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’ Water! Water! Water! ’: These are the words of a person dying from thirst‚ which me or you might be hearing or even crying it out aloud in the near future‚ because human being’s most serious problem and dilemma in the 21st century might not be war or hunger or disease or the collapse of civic order‚ it may be the lack of Fresh Water‚ according to a United Nation’s (UNESCO) report. At present 1.1 billion people lack access to clean water‚ while 2.4 billion lack access to proper sanitation‚ nearly
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When I was researching for this essay explaining what soil and water conservation means to me‚ I found two quotes that really stuck out to me. One written by Franklin D. Roosevelt stated‚ “A nation that destroys its soils destroys itself. Forests are the lungs of our land‚ purifying the air and giving fresh strength to our people.”‚ and another that was written by an unknown author read‚ “Water is life’s mater and matrix‚ mother and medium. There is no life without water.” I am not sure about you
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Intro Forest Conservation is the practice of planting and maintaining forested areas for the benefit and sustainability of future generations. Around the year 1900 in the United States‚ forest conservation became popular with the uses of natural resources. It is the upkeep of the natural resources within a forest that are beneficial to both humans and the ecosystem. Forest conservation acts to maintain‚ plan‚ and improve forested areas. Forests provide wildlife with a suitable habitat for living
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Water conservation From Wikipedia‚ the free encyclopedia United States postal stamp advocating water conservation. Water conservation encompasses the policies‚ strategies and activities to manage fresh water as a sustainable resource‚ to protect the water environment‚ and to meet current and future human demand. Population‚ household size and growth and affluence all affect how much water is used. Factors such as climate change will increase pressures on natural water resources especially in manufacturing and
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Soil and Glaciers Worksheet From Visualizing Earth Science‚ by Merali‚ Z.‚ and Skinner‚ B. J‚ 2009‚ Hoboken‚ NJ: Wiley. Copyright 2009 by Wiley. Adapted with permission. Part 1 Size grades of soil are named sand‚ silt‚ and clay‚ which includes colloids. Size grades are defined using the metric system. Use Figure 4.8 from the textbook to fill in the following chart. Specify the type and size and description of the particle. In some cases‚ particle size will be less than some value or greater
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(D30)2 / [D10 x D60] = 0.1252 / [0.55 x 0.078] = 0.36422 < 1 Cu = D60 / D10 = 0.55 / 0.078 =7.0513 > 6 If a soil is well-graded‚ it should satisfy 1 < Cc < 3 Cu > 4 (for gravels) Cu > 6 (for sand) Note that‚ from our result‚ Cc is much smaller than one. So by the constraints 1 < Cc < 3‚ we can conclude that the testing soil is not well-graded‚ but poorly graded. And the Cu obtained is 7.0513 > 6‚ which implies that the sample should be sand but not
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Soil Erosion Erosion is a natural process by which rock and soil are broken loose from the earth’s surface at one location and moved to another. Soil erosion forms and changes land by wearing down mountains filling valleys‚ and making rivers appear and disappear. Erosion is usually a slow and gradual process that occurs over the course of thousands or millions of years. However the rate of erosion can be speeded up by such human activities as mining. How erosion occurs? Ero0sion begins with
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to instigate wildlife conservation efforts in India‚ World Wildlife Fund has set up various groups. India hosts diverse kinds of wildlife species possibly due to the broad range of weather‚ soil‚ climate‚ and other similar factors. On the negative side‚ however‚ there are certain species that are threatened or vulnerable and are required pro¬¬tection. Perhaps the need of the time is to put more and more conservation efforts to protect wildlife in India. Wildlife Conservation Efforts in India In
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