This zoning chapter is adopted in order to lessen congestion in the streets; to secure safety from fire, flood, panic, and other dangers; to promote health 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, sewer systems, schools, parks, and other public improvements; and to encourage orderly development and the most appropriate use of land throughout the City; all in accordance with the Comprehensive Plan. The provisions established by this chapter for the development of land and the attachment of reasonable conditions to the development of land are an exercise of valid police power delegated by the State. A developer has the duty of compliance with conditions laid down by the City for design, dedication, improvements, and restrictive use of land to conform to the physical and economic development of the City for the health, safety, and welfare of the community at large.