📐 Population Basics
Understanding the fundamentals of population growth
What is Population?
Population is the total number of individuals of a species living in a specific area at a given time.
Size: Total number of individuals
Density: Individuals per unit area
Distribution: How individuals are spread
Growth: Changes over time
Why Study Population?
- 🏥 Planning - Healthcare, schools, housing
- 🌍 Environment - Resource management
- 💰 Economy - Workforce, markets
- 📊 Policy - Government planning
- 🔬 Science - Understanding ecosystems
Key Terms Glossary
Birth Rate
Number of births per 1,000 people per year
Death Rate
Number of deaths per 1,000 people per year
Growth Rate
Birth rate - Death rate + Migration
Carrying Capacity
Maximum population an environment can support
Density Dependent
Factors that increase with population size
📈 Population Growth Models
🔹 Linear Growth
P(t) = P₀ + rt
Constant addition each time period
Example: +100 people each year
🔹 Exponential Growth
P(t) = P₀e^(kt)
Growth proportional to population
Example: 2% growth per year
Zambia uses this!
🔹 Logistic Growth
P(t) = K/(1+Ae^(-kt))
Growth with carrying capacity
Example: Limited resources
🧪 Interactive Learning
Population Simulator
See how populations change in real-time
Growth Calculator
Calculate population growth yourself
Comparison Tool
Compare different growth models
🇿🇲 Zambia Population Basics
20.6M
Current Population
2.76%
Annual Growth Rate
10
Provinces
46%
Under 15 Years
💡 Zambia has one of the fastest growing populations in Africa!