How long does a body last in a grave?

The decomposition of a body in a grave can vary widely based on several factors, including soil composition, temperature, moisture, and burial practices. Generally, in temperate climates, a body may take anywhere from 10 to 15 years to decompose significantly, with bones remaining for many decades or even centuries. In some cases, embalming or casket materials can slow down the process, extending the time before complete decomposition. Overall, conditions play a crucial role in determining how long a body lasts in a grave.