Examlex
In bronchitis, excessive secretion of mucous blocks airflow.
Fracture
a break or crack in rock or bone, often resulting from stress or impact.
Silicon Tetrahedron
A structural unit in silicate minerals, consisting of a silicon atom surrounded by four oxygen atoms in a tetrahedral arrangement.
Silicate Minerals
minerals that contain silicon and oxygen, often forming the majority of the Earth's crust.
Halides
a class of minerals that are compounds of one or more halogen ions (fluoride, chloride, bromide, iodide) and an element.
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