At this time, the end of the sixth millennium and the fifth millennium BC, the first Neolithic cultural groups appear in Egypt. The quantity of archaeological finds does not yet allow us to trace the merging of the Epipaleolithic traditions of the Nile Valley with the cultures of immigrant groups.
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Protons, neutrons and electrons are components of atoms that give it. a positive, negative or neutral electrical charge. A nano particle is a microscopic particle one dimension less than 100. nanometers. A nanometer is one billionth of a meter. Nano particle research. is at the forefront of molecular medicine. An angstrom is a unit of length. equal to one ten-billionth of a meter or one tenth (0.1) of a nanometer. In this application, plant based extracts are processed to form a nano-sized. particle called a micelle.