Answer:
The central place theory
Explanation:
The central place theory:
The theory of the central place is a geographical theory that attempts to explain the volume, location and size of human settlements in a residential environment. The hypothesis was developed by the German geographer Walter Christaller, who believed that settlements were simply ' central locations ' offering services to the nearby areas.
The Rhine River<span> begins at the Rheinwaldhorn Glacier in the Swiss Alps and flows north and east approximately 820 metres. This </span>river<span> is arguably the </span>most important<span>waterway in </span>Germany<span> and is linked by canals to other </span>major rivers<span> in Western Europe.</span>
The two minerals that are found in cement are : Silica and calcite.
<u>Explanation:</u>
Different minerals form the composition of cement but the minerals that are most commonly found in cement are calcite which is contained in the limestone.
The other mineral that is used in the production of cement is silica in the form of raw rock type used to make cement which is found in clay. So they form an important part of formation of cement.
