In economy seats extra necessities are provided such as socks, slippers, toothbrush, blanket and eye cover for good night sleep.
They serve the same purpose and give you extra compartments for necessities.
Engel's law holds that as one increases income, food consumption increases more slowly because food is a basic necessity and extra income typically goes more to non-food things, while the proportion of extra income spent on food is highest among the very poor.
But seeing in the infrared is not an optional extra; it's a necessity.
The extra work is a necessity for Seikaly, both for his recovery from over a month on the sidelines, and for the Nets' fading playoff hopes.
With the increased reactive gases, the decontamination processes are expedited via gasification, and decontamination ratios solely by gasification have reached up to approximately 70%, indicating the necessity of extra effort of removing solidified powder components.
The Greens leader, Richard Di Natale, who is a former GP, thinks that the federal government needs to pump more money into the public health system so that private health becomes an optional extra rather than a necessity.
In order to take advantage of the corrosion properties of Cd and to eliminate the necessity of extra procedures after treatments, besides reducing the drastical risks of environmental contamination and health problems, a new process was developed which can be used for the Cd coating of the surface of metals using Plasma Based Ion Implantation and Deposition (PBII&D).
I suspect that the exhaustion of the players on both teams after all these months of work is more intense than we can imagine, and that the presence of twenty thousand people screaming you on becomes less a positive extra than an absolute necessity for action.
The necessity for extra manpower encouraged further immigration.
