I'm sorry, but it seems like the question you provided is a mix of different topics. Let's break it down:
1. List of all Presidents of the USA:
- This would involve listing all the presidents from George Washington to the current president, Joe Biden.
2. President of the current government:
- As of the time of this response, the current President of the United States is Joe Biden.
3. Loss of fluid in the body in a process called:
- The loss of fluid in the body can occur through a process called dehydration, where the body loses more fluid than it takes in.
4. Why does all matter contain thermal energy?
- All matter contains thermal energy because of the movement of its particles. At the molecular level, particles are in constant motion, which results in the presence of thermal energy.
Feel free to ask more specific questions on any of these topics, and I'll be happy to provide further assistance.
