Soil Microbe Lab Antibiotics are chemicals produced by substances that kill or inhibit the growth of bacterial cells (Hurney et al 2013). These microbes‚ such as bacteria found in the soil‚ may seem like they would be harmful to the human body because they attack cells‚ however they are very efficient at only attacking the bacterial cells. Actinomycetes are one of the more common groups of these soil microbes known to produce antibiotics. Antibiotics work because they target specific aspects
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Overview and purpose of the project: The purpose of this project is to continue to change the way the UST community thinks about waste. Composting confronts the idea that‚ when you throw something away it just disappears‚ and provides alternative to sending our waste to landfills. In the fall of 2012‚ the CSF funded a project to expand Dr. Chester Wilson’s vermiculture composting system‚ which composts all of the coffee grounds produced by Beakers on the second floor of OWS. The goal of this previous
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The role of bacteria in the soil Bacteria in the soil play key role in recycling matter in to useful nutrients which can be used by growing plants. This process of recycling matter in the soil by living organisms is called biogeochemical cycle. Bacteria are improving plants growth in other ways too‚ for example bacteria‚ such as Rhizobium‚ are in symbiotic relationship with the root system of some terrestrial plants. The most important elements‚ which allow terrestrial plants grow well‚ are
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Dispersive Soils Group Members: 1. Elsie Phelane 2. Keeme Sephikwe 3. Lawrance Mabasa 4. Lethlogonolo kotsedi DISPERSIVE SOILS INTRODUCTION Dispersive soils are associated with residual granites‚ granodiorites‚ mudstone and sandstone as well as fine-grained transported soils such as alluvium deposits. Dispersitivity is found in clay‚ silty and sandy soil. Dispersible soils tend to be highly erodible and present problems for successfully managing earth works. It is an indicator of sodic soils as
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providing protection from the sun’s harmful rays‚ the vast forests providing oxygen and shelter‚ the rivers and oceans providing life sustaining water. Until the industrial age‚ man’s relationship with his environment had been a beneficial one‚ in which only what was needed‚ was taken. However‚ with the advent of technology and machines‚ mankind has slowly sunk deeper into the recesses of destruction‚ rather than necessity. Blessed with the gift of intelligence mankind must make an effort to curb
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Weathering & Erosion Weathering is the process that produces change in the surface of rocks exposed to the atmosphere and/or hydrosphere. Physical weathering is breaking rock by force. ex: hitting‚ scratching‚ cracking Frost action (AKA ice wedging)- Water seeps into small cracks in rocks. When the water freezes it expands creating great pressure. The crack widens and allows water to seep deeper into the rock. (Robert Frost’s Mending Wall makes a reference to a frost heave
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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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undertake‚ particularly for a group of students with nothing but a shovel. The soil here is hard and compact‚ full of pebbles and lava rocks. Attempting to dig a pit would have been toilsome and ultimately fruitless. Fortunately‚ while on a fieldtrip‚ my classmates and I came upon an archaeological dig site. It was basically a big pit‚ about five feet deep‚ that was perfect for our observations. There were obvious changes in the soil through the different levels‚ and the archaeologist on location provided
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The task is to evaluate the ways in which current UK Government polices impact upon your chosen organisation. You should choose 1 or 2 of the following areas of government policy: A. Fiscal Policy B. Monetary Policy C. Competition Policy D. Environmental Policy E. Labour Market Policy There are a few reasons why governments may decide to intervene in the economy. The decisions governments take are called government policies and these may have a positive or negative effect on business operations
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control the rate at which a rock weathers are surface exposure‚ composition of rock‚ and climate. The weathering process that takes place in a dry region and a humid region is that in a dry region‚ the wind and sand that are blowing on a rock might wear it down‚ but in a humid region the water will eventually wear down the rock. 12.2 Soils 1-5 The difference between residual soil and transported soil is that residual is a soil who’s parent is bedrock but transported soil is any soil that is formed
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