Examlex
The critical angle for a transparent material is the angle at and beyond which all light within the material is
Calcium Carbonate
A chemical compound used as a dietary supplement or antacid; it's also the main component of limestone.
Spongin
A fibrous protein that makes up the skeleton of many sponges.
Spicules
Small, spike-like structures found in various organisms, such as sponges and some animals, serving as structural supports or defense mechanisms.
Invertebrate Animals
Animals lacking a vertebral column, including species such as insects, mollusks, and crustaceans.
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