Biology·Organisms & their environment · NSSCO 5.3
Populations & growth curves
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How the numbers of living things change — the difference between a population, a community and an ecosystem, what limits growth, the S-shaped growth curve, and the rapid rise of the human population.
What you'll learn in this lesson
By the end you should be able to (NSSCO Biology 5.3):
- Define population, community and ecosystem
- State the factors that affect the rate of population growth
- Identify the phases of a sigmoid (S-shaped) population growth curve and the role of limiting factors
- Describe the increase in human population and its implications
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Miss Rachel and Mike talk through the whole topic — with the figure and working drawn live.