47Akshay went on an adventurous trip with his friends. He went climbing sky diving and underground water diving. He observed that while all the activities were pleasant during water diving, he and his friends felt nauseous and had breathing difficulties. He was aware of the same thing happening to his friends a few years back as he was mountain climbing.
(c) Give two more special situations where the same symptoms can develop?
Along with deep-sea diving, two more situations include: