What happens to a water pool on a day when the humidity of the air is very low?
Answer Details
When the humidity of the air is very low, the air is very dry and can absorb a lot of moisture. If there is a water pool in such an environment, the water will evaporate quickly because the air is eager to absorb the moisture from the pool. Therefore, the water in the pool will decrease rapidly and the pool may even dry out completely, depending on the size of the pool and the humidity of the air. So the correct answer is "Rapid evaporation".