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Wave power plant
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Jupiter
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Coordinate system
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Datagram
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Vacuole
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Reversible reaction
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Siderite
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OCD
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Heat lightning
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Essential nutrient
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Virtual universe
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PGP
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Coronagraph
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Permanent meadow
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Galactorrhoea
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Integrated circuit
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One-time pad
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Granulocyte
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World Charter for Nature
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Triangle galaxy
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End-of-life vehicles
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Diffuse pollution
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Arp's loop
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Non-spectral colour
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Autoclave
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Sea ice - First year thin
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Vitamin B2
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Taproot
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Drosophila
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Luminol
Gypsum
Gypsum is a sedimentary rock from the limestone family, composed of calcium hydrate sulphate. This is the base material of plaster.
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