They cover almost half the surface of Africa*(about % million sq. miles generally central Africa) and large areas of Australia‚ South America and India. REGIONAL CLIMATE The climate is warm and hot Rainfall is about 50.8 to 127 cm annually. SOIL ORDERS The soil is porous with rapid water drainage. Contains a thin layer of humus. DORMINANT GROWTH FORMS Rhodes grass and red oat grass‚ in East Africa Star grasses and lemon grass is common. Deciduous trees and shrubs are scattered across the open landscape
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it may actually cause buildup within the soil. Eventually‚ the soil hardens and looses its moisture. The soil will make its way to other plants‚ which will cause them to exterminate as well. Additionally‚ the pesticides can cause soil erosion which causes the loss of valuable top soil (Billings 40). This is not the end of the effects of pesticides on the environment‚ nevertheless. Some pesticides can pollute water‚ and as chemicals travel through the soil‚ the ultimately come in contact with groundwater
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Three major causes of soil erosion There are three causes of soil erosion over cultivation‚ overgrazing‚ and deforestation. All of these causes can be corrected in different ways. Over cultivation is when the land is repeatedly tiling and producing crops faster than the soil can restore resulting in a decrease in the soil value and productivity. One of the ways that over cultivation can be corrected is by a technique called no-till agriculture. No-till agriculture is a procedure where chemicals
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SOIL LAB: The Wealth Beneath Your Feet Purpose: To determine potential growth based on tests of physical characteristics such as pH‚ fertility and consistency. Pre-Lab: TO start off our investigation‚ we had to gather soil. Our group decided to get it from below a tree‚ right next to the trunk. In terms on fertility‚ we rated our soil to be a 4 (1 being the least fertile‚ 10 being the most). We rated it rather high because it was in a place where it had not been tampered with making it better
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growth and germination of plants lie the nutrients they receive from the soil. The nutrients required for growth are classified into two groupings‚ macronutirents and micronutrients. Macronutrients are those that are needed in very large amounts‚ and whose absence can do a great harm to the development of the plant life. These nutrients include calcium‚ nitrogen‚ phosphorus‚ and potassium‚ and are very sparse in most soils‚ making them the primary ingredients in most fertilizers. The other‚ more
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Specific Environments Abstract: The thing that I did was analyze soil to see if bacteria could live in that environment. The reason why I did it was because I wanted to find out where in the environment bacteria and fungi can live. In order to do my study I had to collect a sample of soil and put it in a dish. After I did that I could look at it underneath a microscope. I found that bacteria did in fact live in the soil so the soil was a sustainable environment for the bacteria to live. Introduction:
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processes occur near the surface of the Earth and are powered by the energy from the sun. In this essay I will talk about the process of mass wasting (Lutgens‚ Tarbuck‚ & Tasa‚ 2011). Under tremendous strain from gravity‚ mass wasting is the movement of soil and rocks being pulled down. Mass wasting evens can be considerably manipulated by climate. Frequent freeze and thaw cycles can affect rocks because the water can seep into the rocks and then freeze. This will in turn cause the rocks to expand and
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including water are obtained from the soil Importance of plant nutrition Plant nutrition is very important for plant. In the absence of any of the elements‚ plant can not complete their life cycle and these can not be supplemented by other elements. They are essential because they are important to plant functions. There are 17 essential plant nutrients. Carbon and oxygen are absorbed from the air‚ while other nutrients including water are obtained from the soil. Plants must obtain the mineral
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to checking the anticipated horizontal deflection of the pipe‚ the designer must evaluate and determine the component parts to be used in the modified Iowa formula. 1. DEAD LOAD‚ We (Check for the maximum fill height.) Fill Height: H = 10 ft Soil Unit Weight: w = 120 pcf Pipe O.D.: BC = 49.5 in. Earth Load We = 10 (120) 49.5/12 = 4950 lb/ft of pipe = 413 lb/in. of pipe For fill heights greater than 8 feet‚ the HS-20 live load may be neglected; therefore‚ Wl = 0‚ meaning W = We 2
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applied to a mass of dispersed soil particles of various shapes and sizes. Larger particles settle more rapidly than the smaller ones. The hydrometer analysis is an application of Stokes’ law that per- mits the calculation of the grain size distribution in silts and clays‚ where the soil particles are given the sizes of equivalent spherical particles. The density of a soil-water suspension depends upon the concentration and specific gravity of the soil particles. If the suspension is
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