OBJECTIVE FORESTRY

Detailed explanation-1: -Permeable rocks: Some rocks like sandstone or chalk allow water to soak through them. They are called permeable rocks.

Detailed explanation-2: -Gravel and sand are both porous and permeable, making them good aquifer materials. Gravel has the highest permeability.

Detailed explanation-3: -Permeable rocks include sandstone and fractured igneous and metamorphic rocks and karst limestone. Impermeable rocks include shales and unfractured igneous and metamorphic rocks. The water table is the natural level of liquid ground water in an open fracture or well.

Detailed explanation-4: -An aquifer is an underground layer of water-bearing rock. Water-bearing rocks are permeable, meaning that they have openings that liquids and gases can pass through. Sedimentary rock such as sandstone, as well as sand and gravel, are examples of water-bearing rock or aquifer.