Drought is defined as a period of deficiency in what type of water supply?

Drought is a complex phenomenon characterized by a significant deficiency in water supply, which can encompass multiple sources of water. The correct answer highlights that drought can affect atmospheric, ground, or surface water supplies, indicating the overall impact on the hydrological cycle.

Atmospheric water refers to the moisture present in the air, which can influence precipitation levels that replenish ground and surface water sources. Groundwater is the water that is stored underground in aquifers, which may experience depletion during extended dry periods. Surface water, including lakes, rivers, and reservoirs, is also directly affected by lack of rainfall, which can lead to reduced water levels and availability.

By acknowledging all these types of water supply, the correct answer reflects the broader impact of drought on the environment and water resources. This comprehensive understanding is crucial for effective water management and planning during periods of drought, ensuring that conservation strategies can be developed to mitigate the effects on all aspects of the water supply system.