1. Substance
2. Suspend
3. Nutrient
4. Prevail
5. Available
6. Dependent
7. Essential
8. Acquire
9. Gravel
10. Advantage
11. Dissolve
12. Periodically
13. Revitalize
14. Acidity
15. Inadequate
16. Enormous
17. Substrate
18. Concentration
19. Remedy
20. Replenish
21. Solution
22. Adjust
23. Increase
24. Prospect
25. Inhabitant