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it can wash the sludge off high mountain peaks and hills, down into the lowlands. so stop and think for a minute.
می تواند آن گل و لای آلی را از ارتفاعات کوهستان ها و قله ها و تپه ها بشوید و به زمین های پست تر براند. خوب یک دقیقه صبر کنید و در باره این موضوع فکر کنید
if we look around us, much of what surrounds us started life as various rocks and sludge buried in the ground in various places in the world.
اگر به دور و بر خود نگاه کنیم بسیاری از چیز هایی که ما رو احاطه کردند زندگی خودشون رو از صخره ها یا گل و لایی دفن شده زیر زمین در جاهای متعدد دنیا شروع کردند
anaerobic wastewater treatment processes (uasb, egsb) are also widely applied in the treatment of industrial wastewaters and biological sludge.
فرایندهای تصفیه بی هوازی فاضلاب (uasb، egsb) بطور گسترده‌ای در تصفیه فاضلاب صنعتی و لجن‌های بیولوژیکی استفاده می‌شوند.
but these haze particles, it was surmised, before we got there with cassini, over billions and billions of years, gently drifted down to the surface and coated the surface in a thick organic sludge.
اما تخمین زده می شود ،این ذرات مه آلود برای میلیاردها و میلیاردها سال پیش از آنکه کاسینی به آنجا برسد به آرامی روی سطح تیتان انباشته شده و سطح این قمر را با لایه ضخیمی از نوعی لجن آلی پوشانده اند.
4.1 introduction all metals having a density higher than 5 g cm 3 are known as heavy metals. depending on their availability under physiological conditions 17 heavy metals may be available and have significance, for the plant and animal communities within various ecosystems. of these most heavy metals are toxic to living forms but on the contrary certain metals like iron (fe), manganese (mn), copper (cu), zinc (zn), nickel (ni) etc. are not only required by plants in very small trace quantity but also play essential roles which are specific to the metals. a decrease in the economic yield of the crops is observed in agricultural fields which have high amount of the heavy (nellessen and fletcher 1993; akinola and ekiyoyo 2006). the availability of heavy metals in soils is dependent on natural procedure, especially lithogenic and pedogenic soils (angelone and bini 1992. besides natural, manmade or anthropogenic activities like mining, plating, excessive use of fertilizers, dumping of household waste and sewage sludge result in anomalies in the soil (alloway 1995) which present a major threat to sustainable agriculture.
Last Update: 2021-05-03
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