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A further study on the correlation between the performance of abrasives and their physical characteristics , such as particle size , hardness , and crystal morphology , could provide the groundwork for a better understanding of the polishing characteristics of abrasives . It will also consider how these cultures have manifest themselves on the land religiously , architecturally , linguistically , etc. Throughout this analysis , the perspective will be that of the cultural geographer , meaning we will pay careful attention to the location , distribution , diffusion , and regionalization of ethnic groups and their cultural characteristics , as well as the interaction of these people with the environment . Under qualitative emphasis , signs tend to keed their internal characteristics and we observe the addition of non-manual behaviours at the sentence level . It is too easy , much too easy , to forget that their individual characteristics and selfless service to country defy easy categorization . The differentiation between goods and services is useful for classifying activities within the structure of production and analyzing the interrelation among products , their physical characteristics , functions of production , locational characteristics , etc ., but are completely comparable in their function as value-creating activities . In the real world , however , goods and services are always changing in their physical characteristics . Controlled by a network of transistors , the liquid crystals change their optical characteristics in response to electrical signals to create the text and images we see . The best example is a population or community of individuals who have traditionally been mishandled by the criminal justice system due to misconceptions about their individual characteristics .