Sep 30, 2014. Ores are rocks that contain enough important elements in concentrations high enough that they can be economically extracted from the rock. The most valuable ores contain important metals like copper, gold, iron, and aluminium. For example, bauxite ore (below) contains from 50 - 70% of aluminium oxide. The bauxite is mined and refined to extract aluminium.
A hair weave is human or artificial hair utilized for the integration with one's natural hair. Weaves can alter one's appearance for long or short periods of time by adding further hair to one's natural hair or by covering the natural hair all together with human or synthetic hairpieces.
6 to 8 weeks is recommended if you are trying to grow your natural hair. The max is 4 months, if you have a full weave, the weave may still look good, but your hair underneath is the main concern. Typically women with silky straight or wavy hair textures can only leave their weaves in for no longer than 8 weeks. Women with tighter curls and thicker hair can go the max of 4 months. Matting, tangling, and dreading (which leads to hair loss) may be a result if you leave your weave in too long.