Cambridge IGCSE Biology
19.1Energy flow
Energy flow in Cambridge IGCSE Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 19.1.1State that the Sun is the principal source of energy for biological systems and describe how energy flows through organisms and is eventually transferred to the environment.
Lessons
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Energy flow and ecological pyramids
20 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Energy flow into a strength.
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