Why do some bodies become skeletons and others mummies?

Mummies are preserved, and the people who become skeletons, are not

Explanation:

because some people used to mummify the bodies by Inserting a hook through a hole near the nose and pull out part of the brain, Making a cut on the left side of the body near the tummy, Removing all internal organs, Letting the internal organs dry, Placing the lungs, intestines, stomach and liver inside canopic jars, then Place the heart back inside the body, and doing a lot more stuff like wrapping the corpse up and stuff. The ancient Egyptians mummified their dead because they believed that the physical body would be important in the next life. Thus, preserving the body in as lifelike a way as possible was the goal of mummification

some become skeletons because, well, the skin, flesh, and organs decay over time leaving only the bones

Explanation:

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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