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Anthropogenic pollution leads to increased concentrations of metals in the freshwater and macrophyte. Aquatic plants substantially contribute to the structure, function as well as and service provision of aquatic ecosystems. Our microcosm experiments were to test the possibility of the physiological response of Hydrocharis morsus-ranae to metal (Cd, Pb, Cu, Zn, Mn, Fe at three level of concentration)...
The technology of erecting war shelters has been evolving over the centuries alongside the development of technology and building-oriented requirements. Many papers have been published on this subject in recent times. The ruins of the Wolf's Lair war fortress prompted the authors to write this wark with a slightly different emphasis than the previous papers. In addition to a brief history of the objects,...
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