The document discusses key characteristics and impacts of population, including: 1. Characteristics of population include size, density, and distribution. Size refers to the number of individuals, while density is the number per area. Distribution can be random, uniform, or clumped. 2. The Philippine population is projected to grow significantly by 2040 due to cultural factors like large families and a preference for male children, as well as economic factors. 3. Overpopulation can strain environmental, social, economic, health, and agricultural resources and lead to problems like pollution, crime, and food insecurity. Land use changes from population growth can damage habitats and worsen climate change.