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).
Crawford Supply encourages trade professionals to comply with the no-lead law. Public Law 111-380 is in effect, and you cannot install or sell piping and plumbing materials that do not meet the lead-free standards redefined by the legislation. Here are some steps you can take to comply: 1  Familiarize yourself with the no-lead law. 2  Learn how to identify how to identify no-lead products. 3  Now is the time to clean out your truck and shop. 4  The lead-free brass products are significantly more costly than the current products, and you need to protect yourself.