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Biology
Exchange and Transport in Animals
Exchange Surfaces
Transport Needs
Transport Needs
What You Need to Know
Describe the need to transport substances into and out of a range of organisms.
Include oxygen, carbon dioxide, water, dissolved food molecules, mineral ions, and urea.
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Practise with Past Papers
Key Terms & Definitions
Previous Section: Animal Coordination, Control and Homeostasis
Urea Production
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Surface Area to Volume Ratio
