- 14:40, 9 May 2025 diff hist +156 Questions:Reservoirs and Town Water Districts
- 14:39, 9 May 2025 diff hist +130 Questions:Energy of Skateboarders
- 14:38, 9 May 2025 diff hist +152 Questions:Variation and Corn
- 14:37, 9 May 2025 diff hist +125 Questions:Energy Transfer by Waves
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