Dr. Buchanan-Hamilton in 1807. Laterites are soil types rich in iron and aluminium‚ formed in hot and wet tropical areas. Nearly all laterites are rusty-red because of iron oxides. They develop by intensive and long-lasting weathering of the underlying parent rock. Tropical weathering (laterization) is a prolonged process of chemical weathering which produces a wide variety in the thickness‚ grade‚ chemistry and ore mineralogy of the resulting soils. The majority of the land areas with laterites
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Resources- The earths natural materials and processes that sustains living organisms Gas Biomass Wood etc. Air Conservation- Sensible and careful use of the resources Resources. Three main groups Perpetual Solar Winds Tides Nonrenewable Fossil fuels Metallic iron‚ copper‚ aluminum Nonmetallic minerals clay‚ sand‚ phosphates Renewable Fresh air Fresh water Fertile soil Plants and animals Biodiversity Environment- All factors that affect a living organism. Ecology- Science dealing
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genetic variation within a specie (genetic diversity). (Oxford dictionary of biology). The root of concern for conserving biodiversity are increased loss of species‚ increased rates of deforestation and soil erosion‚ shifting of global climate due to human activities and the reason for conservation of biodiversity will be discussed in details with respect to its aesthetic value‚ medicinal importance and its ecological value. The concept of biodiversity is important in building awareness‚ knowledge
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Soil Mechanics Soil is the most misunderstood term in the field. The problem arises in the reasons for which different groups or professions study soils. Soil scientists are interested in soils as a medium for plant growth. So soil scientists focus on the organic rich part of the soils horizon and refer to the sediments below the weathered zone as parent material. Classification is based on physical‚ chemical‚ and biological properties that can be observed and measured. Soils engineers think
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Wildlife Conservation in My Country In Malaysia‚ just like elsewhere the modern world‚ many species of wildlife are disappearing fast‚ and conservation measures are needed to prevent animals and plants from vanishing for good. Habitat destruction is a main part of the problem but many animals are being killed and taken by hunters and poachers too. Many rare animals are hunted for food and even for sport. Some are caught alive and then sold on to collectors. One of the saddest and sickest reasons
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Determining the Plastic Limit and Plasticity Index of Soil (Referenced Document: ASTM D 4318) OBJECTIVE: To determine the plastic limit and plasticity index of soil. APPARATUS AND SUPPLIES Evaporating dish Spatula Ground-glass plate—at least 30 cm (12 in.) square by 1 cm (3⁄8 in.) thick for mixing soil and rolling plastic limit threads Balance (with accuracy to 0.01 g) Containers Oven PREPARATION OF TEST SPECIMEN Select a 20-g portion of soil from the material prepared for the liquid limit
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Types of Soil & Their Uses Soil is a complex system of organic and inorganic matter that directly and indirectly supports plant and animal life. It is comprised of minerals‚ nutrients‚ water‚ microorganisms and decomposed living matter that provide the essential elements required to sustain growth. The soils of different geographical areas differ in chemical makeup‚ structure‚ pH value‚ texture and color. Soil makes the basis of the ecosystem and performs functions essential for the survival
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accumulated under water for tens to thousands of year. Decomposition or humification involves the loss of organic matter either in gas or in solution‚ the disappearance of physical structure and the change in chemical state. Peat is generally found in thick layers in limited areas‚ has low shear strength and high compressive deformation which often results in difficulties when construction work is undertaken on the deposit. Peat represents the extreme form of soft soil. It is an organic soil which consists
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Alkaline soil is referred to by some gardeners as”sweet soil”. The pH level of alkaline soil is above 7‚ and it usually contains a great deal of sodium‚calcium and magnesium. (1) Alkaline soil occurs in areas with high limestone content‚ easy souble phosphorus and calcium binding‚ formation of insouble calcium salts of phosphorus‚ reducing the effectiveness of phosphorus. Also‚ in calcareous soils‚ boron‚ manganese‚ molydenum‚ zinc‚ iron greatly reduces the effectiveness of the crop often feel inadequate
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Joe Garcia PTAC-1308 Energy Conservation It would be hard to imagine a life without the use of energy. So many of the products that we use on a daily basis are powered because of electricity‚ which in turn is generated because of energy. American’s use a mixture of different energy sources to cool and heat our homes‚ offices‚ and means of transportation. We also use energy sources to illuminate and power these same places. Oil has provided the United States with less than 50% of energy needs
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