The document discusses population demographics in Pakistan. It defines population as a group of organisms of the same species living in the same area, and demography as the study of human populations in terms of size, composition, distribution, and how populations change over time through births, deaths, and migration. It provides statistics on Pakistan's current population size, population growth rates, birth and death rates, ethnic and religious composition, age structure, literacy rates, education expenditures, health expenditures, urbanization rates, and languages spoken. Rapid population growth and high fertility rates are linked to higher poverty levels.