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Aquifer

 
1. Aquifers:
   - Definition: Aquifers are rocks and soils that possess both porosity and permeability.
   - Porosity: Refers to the presence of open spaces (pores) within the material.
   - Permeability: Indicates the ability of the material to transmit fluids (water, in this context) through those pores.

2. Aquicludes:
   - Definition: Aquicludes are rocks and soils that have porosity but lack permeability.
   - Porosity: They contain open spaces, but...
   - Permeability: ...are not conducive to the easy movement of fluids due to the lack of interconnected pathways.

3. Aquitards:
   - Definition: Aquitards have porosity, but their permeability is limited.
   - Porosity: They have open spaces...
   - Limited Permeability: ...yet the movement of fluids is slower or restricted compared to aquifers due to lower permeability.

4. Aquifuge:
   - Definition: Aquifuge rocks and soils have neither porosity nor permeability.
   - No Porosity: They lack open spaces for water to be stored...
   - No Permeability: ...and offer no pathways for water to flow.

In summary, these terms describe the geological properties of rocks and soils in relation to their ability to store and transmit water. Aquifers are ideal for groundwater storage and movement, aquicludes limit water movement, aquitards allow limited movement, and aquifuge materials prevent water movement altogether.

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