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).
Choose a House and Get the Disclosure. Besides the disclosure, if the home was built before 1980 then the seller must also give the buyer a federally-approved pamphlet about lead hazards in building materials. The seller's disclosure will list any lead paint or other lead items that the seller is aware of. If the items on the Seller's Disclosure seem major, you can try to negotiate to have the seller fix them or to lower the price. Or, the price may have already been set low to take into account any problems with the house.