Silicon in silca and many silcates has 4 oxygen near neighbours which are arranged in an approximately terahedral group around the central Si atom.
high porosity, low permeability
moderate porosity, low permeability
moderate porosity, low permeability.
Any form of water that falls to Earth's surface
The electron pairs in an ammonium ion are disposed along the four lines from the center of a tetrahedron to the four corners of the tetrahedron, with the nitrogen atom at the center of the tetrahedron.
Which description is not an accurate characterization of the Amazon River basin
Grassy plants cultivated for food is the most accurate description of grains.
i
I am not a tetrahedron!
There is no more accurate descriptions of matter than measurements. To get the description right make your measurements precise.
Ruled by no one. (Mob)
changes in the reproductive system
a small group rulers
Weak
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No, they are not the same. An accurate description of land typically refers to a general description of the property's location and boundaries, while a legal description is a precise and detailed description typically found in a deed or other official documents that uniquely identifies the property in accordance with surveying standards.
Short and bloodless