A SOIL SCIENCE QUESTOON.
211986
In general, the more clay in the soil, the higher the cation exchange capacity, the greater the rates of expansion (i.e. greater rates of saturation).\n\nMontmorillonite would expand quikcer because it has the highest cation exchange capacity of all the 2:1 lattice clays.  This higher cation exchange capacity allows for the clay minerals to bond quickly with water or with base cations present, therefore expanding quicker than vermiculite which has a lower cation exchange capacity. \n\nHowever, a vermiculite that is not saturated with base cations will expand quicker than a montmorillonite that is saturated with base cations.  If neither is saturated, the montmorillonite will expand quicker because of its greater cation exchange capacity.\n\nMontmorillonite clays mixed in with soil will be far more fertile than vermiculite mixed in with the soil.  However humus has an even higher cation exchange capacity than both montmorillonite and vermiculite.
192212
soil erosion is most common..soil looses its fertility making it useless for agricultural purposes
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http://www.studentquestions.com/homework_ans/4244.html
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water is a natural resource and we use it foe almost everything, soil is anouther natural resource and u should know wat we use it for, things like that r natural resources
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www.recobio.com/soil-remediation.html\n\nwww.engg.ksu.edu/hsrc/JHSR/vol2no7.pdf\n\ngulliver.trb.org/publications/millennium/00090.pdf
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Dirt is what gets tracked into the house on your shoes.  Soil is the provider of life on much of the Earth.  Soil is formed from weathered rock- I suppose humans could artificially do this, but not on a cost effective scale to, let's say, have a hundred thousand acre corn field.
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I typed "9th grade biology experiment" into Yahoo Search and found some experiments.  Here's one of them: http://www.wested.org/werc/earthsystems/biology/fertilizerfrenzy.html\n\nYou may want to tweak the query to find better results.
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Description of Hydric Soils - A hydric soil is formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions near the surface. The diffusion of dissolved oxygen in waterlogged soils is 10,000 times slower than in unflooded soils. So saturated conditions can quickly lead to a reduction of oxygen in soils. Oxygen also is used rapidly by microbes using either oxygen or oxidized soil components to support their respiration. Once soil become anaerobic, decomposition and nutrient cycling slows down since microbial respiration is most efficient using oxygen as a terminal electron acceptor. \n\nThe most common visual indicators of a hydric soil include: \n\n1) the accumulation of organic matter, which occurs due to slow decomposition rates, \n\n2) reducing soil conditions that form in anaerobic environments. Field indicators of reducing conditions include the presence of reduced sulfur (hydrogen sulfide which leads to a 'rotten egg' odor) or the presence of ferrous iron using the alpha-alpha-dipyridyl test. \n\n3) Soil colors are commonly used in wetland delineation since hydric soils are predominantly gray due to the reduction and movement of iron and manganese under anaerobic conditions (creating a gleyed soil). Bright mottling in a low chroma soil is evidence of fluctuating water tables.
472140
Here's an interesting experiment.
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better land management\nwater management\nuse of fertilizers\nand\nmarketing
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Yeah, that's good.  You could grow some type of plant in each and compare the results.  Some advice - you might want to specify your experiment a bit.  For example, a similar idea is to see whether potatoes grow without soil.  See the third site below.\n\nCheck out these sites.\n\nScience fair projects involving photosynthesis\nhttp://photoscience.la.asu.edu/photosyn/education/sciencefair.html\n\nAgricultural ideas for science fair projects\nhttp://www.ars.usda.gov/is/kids/fair/ideas.htm\n\nScience Fair Central\nhttp://school.discovery.com/sciencefaircentral/scifairstudio/ideas.html
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HEY CAN U PLZ TELL ME IN A BIT DETAIL WAT U NEED FOR UR PROJECT . I HAVE GOT A BIT INTREST IN AGRICULTURE . IF U CAN TELL ME WAT U MAINLY NEED THEN I CAN HELP U . I M ONLINE NOW U CAN ALSO CHAT WITH ME .OK
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Yes, soil moisture.\n\nBut how about the degree of ionicity of the soil; wouldnt that depend on the kinds of minerals in the soil (which is likely to vary as well)...\n\nCordially,\nJohn\nhttp://www.GodSci.org
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It is a cause of soil erosion but not soil pollution. Soil pollution happens due to untreated water
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U r asking for a science project.?\nI have an idea for the science project for chemistry side
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That completely depends on the conditions in the soil- If its fairly dry, you would have a hard, dessicated tissue much like jerky.  In a moist but anoxic soil, the tissue would be well preserved.  In normal moist and oxygenated soil, there would be very little tissue left.
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On Earth, soil is generally considered to be weathered material capable of supporting plant life.[2] Soil forms through a variety of soil formation processes, and includes weathered rock "parent material" combined with dead and living organic matter and air. Soils are vital to all life on Earth because they support the growth of plants, which supply food and oxygen and absorb carbon dioxide and nitrogen.\n\nIntroduction\nBecause of it's position in the landscape and its dynamic physical, chemical, and biologic functions, soil is among our most important natural resources. Indeed, engineers, agronomists, chemists, geologists, geographers, biologists, microbiologists, sylviculturists, sanitarians, archaeologists, and specialists in regional planning, all depend on, and contribute to, knowledge of soils. While the general concept of soil is well established, the definition of soil varies, hinging on the perspective of the discipline or occupation employing it as a resource.\n\nSoil occupies the pedosphere, one of Earth's spheres that the geosciences use to conceptually organise the Earth. This is the conceptual perspective of pedology and edaphology, the two main branches of soil science. Both branches apply a combination of soil physics, soil chemistry, and soil biology. Due to the numerous interactions between the biosphere, atmosphere, and hydrosphere that are hosted within the pedosphere, more integrated, less soil-centric concepts are also valuable. Many concepts essential to understanding soil come from individuals not identifiable strictly as soil scientists. This highlights the interdisciplinary nature of soil concepts.\n\nThe understanding of soil is incomplete. Despite the duration of mankind's dependence on and curiosity about soil, exploring the diversity and dynamic of this opaque resource continues to reward. New and refreshing avenues of soil research are compelled by our need to understand soil in the context of climate change [3], greenhouse gases [4] [5], and carbon sequestration. [6]\n\nVasily V. Dokuchaev, a Russian geographer, is credited with identifying soil as a resource whose distinctness and complexity deserved to be separated conceptually from geology and crop production and treated as a whole.\n\nPreviously, soil had been considered a product of physicochemical transformations of rocks, a dead substrate from which plants derive nutritious mineral elements. Soil and bedrock were in fact equated. Dokuchaev considers the soil as a natural body having its own genesis and its own history of development, a body with complex and multiform processes taking place within it. The soil is considered as different from bedrock. The latter becomes soil under the influence of a series of soil-formation factors (climate, vegetation, country, relief and age). According to him, soil should be called the "daily" or outward horizons of rocks regardless of the type; they are changed naturally by the common effect of water, air and various kinds of living and dead organisms. [7] \n\nWhat is soil?\nSoil classification\nMain article: soil classification \nSoil classification is a contentious subject, from the structure of the classification system itself, to the definitions of classes and types, and finally in the application in the field. Every classification system starts with its own individual definition of soil. The essential problem is that soils do not reproduce or have DNA like living organisms, so no "objective" criteria can be used to choose among classifications. The most qualified specialists in the world can and do spend hours during a field trip at each soil profile, arguing about the classification. Yet, in a well-constructed system, the different names refer to similar concepts, so that interpretations do not vary widely.\n\nThe Unified Soil Classification System (or USCS) is used in engineering, geology and soil science disciplines to describe the texture, grain size,