Question

Failure in the oxygen cycle within hydrosphere can result in _______.

• A. Hypoxic zone
• B. Hydroscopic zone
• C. Hygroscopic zone
• D. Hydro zone

Answer 1

Answer: (A)

Hypoxic zone

The atmosphere contains about 21% oxygen. The balance of oxygen in the atmosphere is vital for the living organism as it is one of the most crucial gas for survival. The two major processes respiration and photosynthesis balance the percentage of oxygen in the atmosphere. The oxygen evolved in photosynthesis is taken by the process of respiration which expels carbon dioxide and the cycle continues. The disturbance in the cycle may lead to a shortage of oxygen in a particular zone which is known as the "hypoxic zone".

So, the correct answer is option A.