Step 1: Basic understanding.
Population growth depends on the balance between natality (birth rate), mortality (death rate), immigration (inflow), and emigration (outflow).
Step 2: Major factors.
1. Birth rate (Natality): Higher birth rate increases population.
2. Death rate (Mortality): Lower death rate increases population growth.
3. Migration: Immigration increases population, emigration decreases it.
4. Socio-economic factors: Education, healthcare, and awareness influence growth rate.
5. Government policies: Family planning, incentives, and awareness programs regulate growth.
Step 3: Conclusion.
Population growth is affected by demographic (birth \& death rate), social, and economic factors.