Scientific Study from the year 2016 in the subject Biology - Botany, Bansthali University, language: English, abstract: Out of 90 naturally occurring elements, 53 are considered as heavy metals, however, not all of them have biological significance. Heavy metals cannot be smashed, but can only be altered from one state to another. On the basis of their solubility in physiological conditions, 17 heavy metals are obtainable for living cells and of significance for the organism and ecosystem. Among these metals, Fe, Mn and Mo are important as micronutrients; Cu, Co, Cr, Ni, V, W and Zn are...