Cambridge IGCSE Biology
19.4Populations
Populations in Cambridge IGCSE Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic19 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 19.4.1Describe a population, a community and an ecosystem.
- 19.4.2State the factors that affect the rate of population growth, identify the phases of a sigmoid growth curve and interpret graphs of population growth.
- 19.4.3Supplement: explain the factors that lead to each phase of the sigmoid growth curve, including limiting factors.
Lessons
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Populations, communities and ecosystems
20 min
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Sample question
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