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Pick up just a tiny bit of soil and you will discover a whole new world. Researchers have found that one pinch of soil may contain more than 30,000 protozoa, 50,000 algae, 400,000 fungi and billions of individual bacteria in addition to larger organisms like worms, insects and mites also live in the soil. These organisms break down dead plants and animals and recycle the nutrients into organic materials that enrich the soil. The movement of elements such as nitrogen, sulphur and phosphorus between different forms as they pass through the food chain. The elements cycle between gas forms and compounds which are found in soil and living organisms. For example, nitrogen cycle is heavily reliant on bacteria and involves the formation of nitrates (needed for making proteins which are the functional molecules in all organisms) from atmospheric nitrogen and then the break down of nitrogen compounds to nitrogen gas. The nitrogen cycle is an important part of soil formation and soil fertility.
Q. Explain Tricuspid regurgitation? Though tricuspid regurgitation is a common valvular abnormality on echocardiography rarely is it due to primary organic disease. Secondar
Accidents in Industry Workplace It is a hard fact to bear in mind that accidents in industry workplace are to be avoided or discarded and efforts in this direction has been in
Historically what were the two main evolutionary theories? The two major evolutionary theories were darwinism and lamarckism.
Q. Which are the germ layers present in cnidarians? Which tissues of the animal do they originate? These beings present endoderm and ectoderm, two germ layers. Animals only wit
Ecology is divided into two fields: (a)Autecology (b) Synecology (a) Autecology: it deals with life history, population dynamics, behavior etc of a single
function of epithelial tissue
function of cell coat
Q. How is the nervous system characterized in beings of the phylum Annelida? How can one compare cephalization in annelids to cephalization in platyhelminthes and nematodes? An
Osmoregulation in Animals Osmoregulation associates to the regulation of water and ionic content of the body of non-chordate metazoans. These might be osmoconformers / osmoreg
Q. Describe Coronary Spasm? Usually spasm develops at the site of subcritical or critical stenoses, but it may also occur in angiographically normal coronary arteries, the so c
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