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International Space Station
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Artificial neuron
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Zonisamide
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Oat
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Adrenal glands
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Prosthesis
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Saurian
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Ring of fire
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Ookinete
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Magnetotactic bacterium
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Piezometer
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Ice growth
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Hydrolase
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UEPS
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Saffir-Simpson Scale
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Interdigital webbing
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Wilson Cycle
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Ecosystem
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Stalactite form
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Optical isomers
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Occultation
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iPad
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Epitope
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Revocation
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Spectroheliograph
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PEFC
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ROT-13
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Solar flare
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Cryptomeria
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Megafauna
Convulsion
A convulsion is a sudden involuntary contraction of a group of muscles.
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