Answer:
The only organism that doesn't eat prey is prob scavengers, because scavengers eat dead organisms, so I don't rlly think dead organisms are preys :3
Explanation:
:3
<span>Bones are linked together at skeletal joints by </span>cartilage I believe.
I would think that an unweathered rock would be jagged while a weathered rock would be smooth because of water/wind or what ever weathered it.