Answer to Question 1
Sediments on the ocean floor are saturated with water. Beneath lakes, it is possible to have an unsaturated zone, and a saturated zone below that.
Answer to Question 2
Shear stress increases with the increasing weight of the glacier, so a thick glacier exerts great shear stress on the bed and also on valley walls. This shear stress allows the moving ice to pluck rock and to abrade the rock because of fragments frozen into the ice. Water flowing beneath a glacier alternately freezes and thaws, which further dislodges rock fragments that may then freeze into the base of the glacier where they are carried along and may contribute to further rock abrasion. Water under the glacier commonly flows at high pressure, which enhances erosion potential and permits the water to carry eroded debris out from beneath the glacier.
Water cabbage
Table 6.1 illustrates the main regime types and their differences. It breaks the regimes into four
Large water tank, possibly a public or ritual bathing area, from Mohenjo-daro, Indus Valley ...
Daily Water Balance in the Body
Water Helps Regulate Your Body Temperature
Hydrogen burns to produce energy and water