Population density is defined as the number of humans living on an unit area. It is <span>measured by the number of human inhabitants per square kilometer. It may be calculated for country, city or other territory. Netherlands is the most densely populated European country. The population density in Netherlands is 394 people per square. </span>
As with igneous and sedimentary rocks, metamorphic rocks are classified on the basis of texture (grain size, shape, orientation) and mineral composition. However, the classifiction of metamorphic rocks is more difficult to get into than with igneous and sedimentary rocks, for a couple of reasons.
The answer is A to this question primary
