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Most of them never heard it (The ringtones).
2. enzyme
3. esophagus
4. lower esophageal sphincter (LES)
5. throat (pharynx)
6. stomach
7. stomach
8. protein
9. HCL
10. small intestine
11. chemical
12. nutrient
13. cells
15. bacteria
16. anus
17. solid
Answer:
some sort of water system, (a river/groundwater/purification plant ect.)
Explanation:
The answer is UAC-GUA-CGU-UCA-AUC