There are also some special post codes: the airport has its own post code (1300), the UN (1400) and some big companies also have their own post code, for example the ORF, the Austrian National Broadcasting Service (1136).
Two different types of succession, primary and secondary, have been distinguished. Primary succession occurs in essentially lifeless areasâregions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. Secondary succession occurs in areas where a community that previously existed has...
Primary Succession. Primary succession begins when organisms move into a landscape previously devoid of all living things following a major disaster, such as the eruption of a volcano that completely destroys the prior environment. This succession involves a total rebuilding of the ecosystem.rimary succession is the population of an ecosystem that was previously completely uninhabited, while secondary succession involves the re-population of a diminished vegetative community. Other People Are Reading.