The main factors determining population distribution are : climate, landforms, topography, soil, energy and mineral resources, accessibility like distance from sea coast, natural harbours, navigable rivers or canals, cultural factors, political boundaries, controls on migration and trade, government policies
They are trained physicians that work with people suffering with pulmonary diseases.
Response plan, evacuation plan, and containment plan.
Largest group of waters soluble vitamins is Vitamin B complex.