For the first one it is C the muscle system
For the second one it is A allow movement in the body
For the third one it is C Skeletal Muscles
Non of the above because protons and neutrons don’t mix with each one there
Increase, because you need heat to melt a solid to a liquid, so the temperature will have to get greater.
Answer:
The answer is calories.
The average human being needs 2000 calories for them to be energized.