Answer:
Because of their wave movement, P waves travel through any kind of material, whether it is a solid, liquid or gas. On the other hand, S waves only move through solids and are stopped by liquids and gases. ... This also accounts why fewer S waves are recorded than P waves.
Answer:
because it begins where there is no soil. It can take several hundred to several thousand years to produce fertile soil naturally. The first pioneer species to colonize the bare rock will probably be bacteria and lichens, which can live without the soil.
The "Canadian regionalism" relates broadly to the spirit of regional variations in Canada. In Canada, regionalism is an inescapable part of society, economy, and politics. It also leads to stresses between institutional and emotional attachments, national and local economy.