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Adsorption , adsorption The physical binding of a particle of a particular substance to the surface of another by adhesion or penetration. In soils it is the atta… Cephalon , cephalon The anterior or head region of a trilobite (Trilobita), which consists of at least five fused segments and is generally semicircular in shap… Alum , alum (ăl´əm), any one of a series of isomorphous double salts that are hydrated sulfates of a univalent cation (e.g., potassium, sodium, ammonium, ce… Psilophytales , Skip to main content
Psilophytales
Psilophytales (psilophytes) Primitive pteridophytes, which were the earliest vascular plants, from the Silurian an… Atmospheric Nucleation , condensation nucleus A small particle of an atmospheric impurity (e.g. salt, dust, or smoke), which provides surfaces for the condensation of water.… Sulcus , sulcus (pl. sulci) Latin for groove or furrow.
1. A complex region of parallel ridges and furrows on a satellite surface, particularly well developed…
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