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3.3.2 Gas exchange in fish (AQA A-level)

3.3.2 Gas exchange in fish (AQA A-level)

Subject: Biology

Age range: 16+

Resource type: Lesson (complete)

Last updated

13 February 2024

pptx, 45.7 MB
pptx, 45.7 MB

For AQA A-level (oxford)

Learning objective covered:
Describe the structure of fish gills
Describe how water is passed along fish gills
Explain the difference between parallel flow and countercurrent flow.
Explain how countercurrent flow increases the rate of gas exchange

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