----------- results from light being absorbed and diffused as it passes from air to fiber and back air in paper.

When the temperature changes, the viscosity of all inks changes but paste inks also lose viscosity or body when they are stirred or otherwise sheard. this characteristic is called -----------

The purpose of tamper evident closure in packaging 

--------------- are used to protect the packaged products during shipping.

The property of printing ink that describes the degree of its resistance to flow 

Paper of ------------- gsm is defined as paper board or board by ISO