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Uranium
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Cervix
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Soyuz
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M87
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Coordination bond
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Fibrosis
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Megafauna
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EES
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Sleet
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Final assembly building
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Holohedry
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Lesser celandine
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Quartz sand
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Planetary aberration
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Nephroblastoma
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Piscivore
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Channel B
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Fischer-Tropsch process
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Transgenesis
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Cyberspace
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Logical channel
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Stratiform
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Oligocene
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Gastric
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Black-veined white
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Convention on Biological Diversity
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Dark matter
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Hololecratic
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Fine structure constant
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Kerr black hole
Shell
A shell is a hard, calcareous envelope that constitutes the external skeleton of most molluscs and brachiopods.
In birds: External calcified egg shell.
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