The plants are supported by the porous rock as it is filled with nutrient-bearing water that carries dissolved minerals from the rocks and guano.
32.
Electrokinetic effects are initiated by sound waves ( typically P-waves ) passing through a porous rock inducing relative motion of the rock matrix and fluid.
33.
The rocky cliffs are made of porous rock that absorbs rainwater, which then seeps out forming permanent cascades and pools, such as the Phothophotho Gorge.
34.
These can be formed from molten droplets originating from meteor impacts or from volcanic action, or they can precipitate from solution inside of porous rock.
35.
They form in gas pockets in the lava, which act as molds, from the action of water percolating through the porous rock carrying silica in solution.
36.
Most of the water for irrigation is obtained through the falaj system, in which a vertical shaft is dug from the surface to reach water in porous rock.
37.
While he prays, his assistant dips a pink silk rose into a chalice of holy water, then sprinkles water over the brick-colored porous rocks that cover the grave.
38.
The village is underlaid by a soft stone layer of porous rock, replete with rows of caves that were once used for human habitation, now largely for animals.
39.
Small streams flow into the lake from ridges above it, and water exits the lake mainly by seeping through porous rock to enter the Bull Run River about downstream.
40.
And in a layer of porous rock deep beneath the boroughs, the city is also considering creating a reservoir, a giant underground bubble of water stored in the porous earth.
