Question

what is the main source of water​

Answer 1

rain water ans ground water

Answer 2

Answer:

Some sources of water are obvious, like lakes and rivers, while others, like glaciers, are a bit more removed from everyday experience. With so many people living near water, it sometimes seems unlikely that water shortages could be a serious problem. Understanding the sources of water available for human use reveals how limited freshwater actually is. Despite the overwhelming amount of water on earth, very little of it is suitable for consumption. New research and technology are currently seeking answers to this dilemma.

hope it helps