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| 16 |  Specialised Cells - GCSE Biology (9-1) 1.2 | Mr Exham Biology @mrexhambio | 2.8K | Reino Unido | 67 |
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| 10 |  What is an ecosystem? - GCSE Biology (9-1) - 9.1 | Mr Exham Biology @mrexhambio | 2.6K | Reino Unido | 72 |
| 6 |  Diffusion, Osmosis and Active Transport - GCSE Biology (9-1) 1.15 | Mr Exham Biology @mrexhambio | 2.1K | Reino Unido | 73 |
| 12 |  Parasitism and Mutualism - GCSE Biology (9-1) 9.4 | Mr Exham Biology @mrexhambio | 1.3K | Reino Unido | 70 |
| 11 |  Biotic and Abiotic Factors - GCSE Biology (9-1) 9.2 | Mr Exham Biology @mrexhambio | 890 | Reino Unido | 71 |
| 5 |  The Carbon Cycle - GCSE Biology (9-1) - 9.13 | Mr Exham Biology @mrexhambio | 885 | Reino Unido | 75 |
| 7 |  Human Impacts on Biodiversity (Fish Farming/Invasive Species/Eutrophication) - GCSE Biology (9-1)9.9 | Mr Exham Biology @mrexhambio | 830 | Reino Unido | 73 |
| 14 |  Microscopy - GCSE Biology (9-1) 1.3 | Mr Exham Biology @mrexhambio | 746 | Reino Unido | 67 |
| 3 |  Food Chains - GCSE Biology (9-1) 9.7B | Mr Exham Biology @mrexhambio | 577 | Reino Unido | 75 |
| 4 |  Studying Ecosystems - Core Practicals - GCSE Biology (9-1) 9.5 - 9.6 | Mr Exham Biology @mrexhambio | 562 | Reino Unido | 75 |
| 8 |  Preserving Biodiversity - GCSE Biology (9-1) 9.10 | Mr Exham Biology @mrexhambio | 546 | Reino Unido | 72 |
| 2 |  Interdependence - GCSE Biology (9-1) 9.3 | Mr Exham Biology @mrexhambio | 436 | Reino Unido | 76 |
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| 19 |  The Industrial Revolution: How Energy, Coal and War Changed the World | Everything History @everythinghistoryyt | 327 | — | 66 |
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