Answer;
-colorless impregnation
Explanation;
-Colorless impregnation improves the appearance and stability or porous gems like jadeite. Sometimes a dye is added to improve color. Colorless impregnation involves filling of pores or other openings with melted wax, resin, polymer, or plastic to improve appearance, luster and stability. Commonly used in turquoise and jadeite. Dye could be added to the filler. This would be considered two treatments, impregnation and dyeing.
-The impregnation of a porous gemstone with a colorless agent (usually plastic) is meant to give it durability and improve appearance. Example:Stabilized turquoise
The water can be affected by point source pollution
Answer:
Inter-rater agreement
Explanation:
The extent to which two or more raters (or observers, coders, examiners) agree is termed as Inter-rater agreement. It addresses the issue of consistency of the implementation of a rating system.
A high inter-rater agreement value refer to a high degree of agreement between two examiners, vice-versa
Answer:
Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.
Explanation:
