Answer)
Of diffusion
Explanation)
Molecules move down a concentration gradient without the need to use energy. This means they move from a high concentration to a low concentration. This occurs across a semi- permeable membrane, like a cell membrane, by simple diffusion.
Goku is stronger than vegeta
The process of regurgitation is when an animal spits it's food back up its esophagus wilfully. Muscles in the animals stomach and throat work together to force food back up and out if the body. Long story short, it's like voulantary vomitting.
Hope this helps : )