humanbody is a solid and is deser than water.why a dead body float on water?

Asked by  | 21st Jun, 2008, 11:45: AM

Expert Answer:

Gas build up from decaying tissue makes the body bouyant.

A cadaver in the water starts to sink as soon as the air in its lungs is replaced with water. Once submerged, the body stays underwater until the bacteria in the gut and chest cavity produce enough gas -- methane, hydrogen sulfide, and carbon dioxide -- to float it to the surface like a balloon. (The buildup of methane, hydrogen sulfide, and other gases can take days or weeks, depending on a number of factors.)

Answered by  | 28th Jun, 2008, 11:38: AM

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