Final answer:
Groundwater is the most significant reservoir of fresh water on Earth, essential for sustaining life and crucial in arid regions.
Explanation:
Groundwater is the largest reservoir of usable fresh water on Earth, containing over 30 times more water than rivers and lakes combined. It is particularly vital in arid regions where surface water is scarce. Groundwater originates from rain or snowmelt, infiltrating the ground and filling pore spaces in the saturated zone.
Learn more about Freshwater distribution and groundwater importance here:
https://brainly.com/question/10557415
