In carrying out the provisions of Sections 89.010 through 89.140 of the Missouri State Statutes, the Planning and Zoning Commission and the City Council of Malden, Missouri, have divided the City into districts and have prepared regulations pertaining to such districts in accordance with a comprehensive plan and designed to lessen congestion in the streets; to secure safety from fire, panic and other dangers; to promote the health, morals, and general welfare; to provide adequate light and air; to prevent the overcrowding of land, to avoid undue concentration of population; to facilitate the adequate provision of transportation, water, sewerage, schools, parks, and other public requirements.