Endocrine and nervous systems .
Nutrient cycle is the biogeochemical cycle that<span> includes exoskeleton and shells of marine organisms as a reservoir. This cycle involves the exchange of organic and inorganic matter back to the living production of matter. The decomposition of exoskeleton and shells of marine organisms will give nutrients which will be used in this cycle.</span>
It oxidies iron and inorganic sulfur compounds. The oxidation process can be harmful, as it produces sulfuric acid, which is a major pollutant. It has been suggested that T. ferrooxidans forms a symbiotic relationship with members of the genus Acidiphilium, a bacterial capable of iron reduction. Other species of Thiobacillus grow in water and sediment; there are both freshwater and marine strains.
The bacteria are usually found in rivers, canals, mine drainage effluents and mining areas. So there may be some source of these bacilli near their house.They require inorganic sources to grow and contain an enzyme called ferrous oxidase that allows them to metabolize iron.
<span>They eat iron pipes corroding the pipes leading into households and produce a thick slime layer biofilm.</span>
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Explanation:
Gene's that code for amino acid sequences are known as 'structural genes'.