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8th Grade Science
Environmental Science
19. Ecosystems
19.2 Population Studies, Growth and regulation
Population Growth and Regulation: How Ecosystems Keep Balance
Explore how populations grow, what limits their size, and how ecosystems maintain balance through carrying capacity and limiting factors.
What You'll Learn
Exponential growth produces J-curves while logistic growth produces S-curves.
Carrying capacity is the maximum population an environment sustainably supports.
Density-dependent factors intensify with crowding unlike density-independent factors.
Birth rates, death rates, immigration, and emigration determine population change.
What You'll Practice
1
Students identify density-dependent versus density-independent limiting factors clearly.
2
Learners apply carrying capacity and growth curve models to real scenarios.
3
Practice questions test vocabulary including natality, emigration, and biotic potential.
Why This Matters
Understanding population growth and regulation equips students to analyze real-world environmental challenges, from conservation biology to managing invasive species and predicting ecosystem collapse.
This Unit Includes
Practice exercises
Learning resources
Skills
Carrying Capacity
Limiting Factors
Population Growth
Biotic Potential
Ecosystem Dynamics
NJ Curriculum Aligned