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8. one of the most important roles of soil organisms is breaking up the complex substance in BK in plant and animals so that they can be used Again by living plants in walls soil organisms as catalysts number of natural cycles among the most from attachment being the carbon nitrogen and sulphur cycles
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1: Soil fertility can be further improved by incorporating cover crops that add organic matter to the soil, which leads to improved soil structure and promotes a healthy, fertile soil, by using green manure or growing legumes to fix nitrogen from the air through the process of biological nitrogen fixation.
2: Because earthworms breath through their skin, it must be kept moist in order to work. Dry skin stops the diffusion process, effectively preventing earthworm from getting oxygen.
3: The inorganic material of soil is composed of rocks, which is broken down into small particles of sand and clay. Loam is a soil that is mixed with sand, silt and humus.
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