Glands is one of the possible answers
Brain
Lunges
Stomach
Liver
Answer:
it leads to the formation of volcanic islands
There can only be one because hes at the top of his food chain
The difference between the two students that we know of is that they used a different meter stick. So the difference would be best attributed to the different tools they used.
Note, this is quite a huge difference. It's likely that one of the sticks, or both, are quite defect.