hey kiddo, im 13 to, i think a bone deteriorates when you turn a pensioner (65) but vigorous exercises of earlier ages could cause bones to go in your 50s or early 60s. hope i helped ;)
They never really totally rot to nothing. There will still be bits left. That is one reason we can take a look at bodies that are thousands of years old and tell how they lived, what they ate, and...
Depends on the type of food. Food spoilage occurs depending on the food, the way it is stored, and how it is stored. Refrigerating meat might only keep it fresh for a matter of days but freezing it...
It depends on what type of bone. A human bone would take about 8 years in a area like Mexico, while it would take 80 years in a cold environment like Canada. It depends on the contents of the bone...