Which of the following material takes the longest time for biodegradation?
Which of the following material takes the longest time for biodegradation?

a. Cotton

b. Paper

c. Bone

d. Jute

Answer: c. Bone

Explanation: The bones will take the longest time to degrade. Bones are made up of proteins (especially collagen), rare minerals (calcium, hydroxyapatite) and organic compounds. The unique structure of collagen proteins (other proteins that are highly resistant to degradation) strengthens bones. In addition, inanimate ions such as calcium strengthen bones.