🫁 Gaseous Exchange Explained | GCSE PE Revision Confused about how oxygen gets into the blood and carbon dioxide gets out? This video breaks down gaseous exchange step by step in a clear, exam-friendly way. ✅ Where gaseous exchange happens ✅ How diffusion works ✅ Adaptations of the alveoli ✅ Links to exercise and performance ✅ GCSE exam tips mark scheme ⏸️ Pause the video to answer the exam question at the end — then check your answer against the mark scheme! Perfect for: 📚 GCSE PE revision 📝
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