13. Excretion
A section of Biology, 5090
- 1. Cells
- 2. Classification
- 3. Movement into and out of cells
- 4. Biological molecules
- 5. Enzymes
- 6. Plant nutrition
- 7. Transport in flowering plants
- 8. Human nutrition
- 9. Human gas exchange
- 10. Respiration
- 11. Transport in humans
- 12. Disease and immunity
- 13. Excretion
- 14. Coordination and control
- 15. Coordination and response in plants
- 16. Development of organisms and continuity of life
- 17. Inheritance
- 18. Biotechnology and genetic modification
- 19. Relationships of organisms with one another and with the environment
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