Factors in Population Growth The key factors in population change are natural increase (the number of births minus the number of deaths), net migration, and the interplay between these elements. These factors are in turn driven by fertility rates, the age structure of the population, mortality rates, life expectancy, and rates of in- and out-migration.
Federal law requires that before signing a lease for housing built before 1978, renters must receive the following from your landlord: An EPA-approved information pamphlet on identifying and controlling lead-based paint hazards, Protect Your Family From Lead In Your Home (PDF).
(Iâve found pennies, paper clips, paper and even rocks in my sonâs mouth.). In 2008, the EPA passed a regulation stating that any contractor who is renovating a home with lead-based paint must be trained and certified to deal with it properly to minimize human exposure.