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Stromatolite
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Baikonur
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Summer solstice
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Heat transfer fluid
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Prostrate shrub
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Wave mechanics
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Authorisation certificate
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IMAP
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Efficacy
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Autonomous
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JAXA
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Bone density
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Barycentric
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Anticholinergic bronchodilator
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Lava tube
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Anticoagulant
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Atrophy
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Emphysema
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Transalaska
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VoIP
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Three Mile Island nuclear accident
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Black poplar
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Coriander
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Schistosomiasis
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Toxicity
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Andromeda galaxy
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Impactor
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Time-lapse
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Virtual water
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Michelson interferometer
Polderisation
Polderisation is the reclaiming of land from the sea or in wet zones by building levees, filling and draining
This artificially created land (polders) can be used for agriculture, infrastructures (e.g. airports) or urbanisation, but polders are vulnerable to flooding.
An agricultural polder such as can be found in the Netherlands. Canals and mills can be seen continually draining the water from these wet zones. © Edward MacGregor CC by-nc-nd 3.0
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