This law was enacted to promote the health, safety, morals and general welfare of the community; to lessen congestion in the streets; to secure safety from fire, panic and other dangers; to provide adequate light and air; to prevent overuse of land; to avoid undue concentration of population; and to facilitate the adequate provision of transportation, water, sewerage, schools, parks and other public requirements, under and pursuant to Chapter 62, Articles 9 and 16, of the Consolidated Laws of New York State. This law also seeks to regulate and restrict the form, height, area and size of buildings and other structures, the percentage of lots that may be occupied, the size of yards, the density of population, and the use of buildings, structures and land for trade, industry, residence or other purposes.