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).
Read the plan and learn more about the next webinar. Lead in Drinking Water January 12, 2017 - EPA initiates a peer review of draft scientific modeling approaches to inform EPAâs evaluation of potential health-based benchmarks for lead in drinking water. Read more. January 5, 2017 - EPA releases a proposed regulation for Implementing Section 1417 of the Safe Drinking Water Act.