It is called an unsaturated layer.
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The layer above the troposphere is called the stratosphere.
The layer underground where all empty spaces are filled with a combination of air and water is called the vadose zone or the unsaturated zone. This zone is located above the water table and allows movement of both air and water through it.
Zone of saturation
The upper layer of saturated rock and soil is called the water table. It represents the boundary between the unsaturated zone above, where pores contain both air and water, and the saturated zone below, where all pores are filled with water.
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The layer above the troposphere is called the stratosphere.
The layer underground where all empty spaces are filled with a combination of air and water is called the vadose zone or the unsaturated zone. This zone is located above the water table and allows movement of both air and water through it.
Groundwater is located in aquifers which are layers of rocks underground that have pores that fill with water that comes from the above layer called the water table or phreatic surface. Further below the water table, where the pores are filled with water, is called the phreatic zone.
Zone of saturation
It is usually called the crust.
The layer just above bedrock is called subsoil. It consists of a mixture of minerals, nutrients, and organic materials that are vital for plant growth.
The upper layer of an aquifer is called the unsaturated zone or vadose zone. This zone is located above the water table where the pore spaces are filled with both air and water. It acts as a buffer between the surface and the saturated zone below.
The aquifer layer in which all pores are filled with water is called a saturated aquifer. This means that the water table is at or near the surface and the aquifer is fully saturated with water.
The layer above the photosphere is called the chromosphere. It is a region of the Sun's atmosphere where temperatures increase with altitude. Above the chromosphere lies the corona, which is the outermost layer of the Sun's atmosphere.
The upper layer of saturated rock and soil is called the water table. It represents the boundary between the unsaturated zone above, where pores contain both air and water, and the saturated zone below, where all pores are filled with water.
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