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3rd Grade Science
Biodiversity
2. Ecosystems
Population Dynamics, Groups of organisms in area
Discover How Populations of Organisms Live and Change in Ecosystems
You will explore what a population is, how population size changes over time, and how populations connect to communities and ecosystems.
What You'll Learn
You learn that populations are same-species groups sharing one area.
You discover birth rate, death rate, and migration change population size.
You understand how populations, communities, and ecosystems are different.
You explore key terms like predator, prey, producer, and decomposer.
What You'll Practice
1
You will identify populations from tables showing different organism counts.
2
You will match vocabulary terms like habitat, community, and ecosystem correctly.
3
You will explain how food, predators, and disease affect population size.
Why This Matters
Understanding how populations grow and change helps you see how every living thing in an ecosystem is connected and why protecting nature matters.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Population Dynamics
Ecosystems
Food Chains
Biodiversity
Habitats
