Question

i ask from brainly leaders why a live men do not float on water while a dead men float on water

Answer 1

1. The body starts to sink because the air in its lungs is replaced slowly with water thus increasing density. Once the body is submerged, its decomposition starts.
2. It remain submerged for some days until the bacteria in the gut and chest cavity produce enough gas(i.e,methane, hydrogen sulfide, and carbon dioxide).
3. Not all parts of the dead body inflates the same amount. Abdomen and chest bloats more as it contains the most bacteria and cavities, thus rises first followed by limb and head.
4. Also, if a body stays on the surface of the water for a long time it will release the built-up gas and sink once again.