Lake Kartha
A water molecule spends the most time in the ocean reservoir, as oceans hold the largest volume of water on Earth.
the ice water
Mantle
pacific
The USA
Lake Baikal
A reservoir is used for storing something for later use. These are most commonly associated with the water supplies for cities which must accumulate large quantities of water in a confined area.
That is because most of it is in galsures.
Water.
water
Most water is stored in the oceans. However, the most freshwater is stored in glaciers. To the person whose answer I'm editing, a reservoir is anything that holds water, so of course that's where water's stored.
fresh flowing surface water is one of our most precious resources