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Crossword Help Forum
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isabel

7th March 2009, 13:33
19d thing living on the sedimnet of river or lake beds(7)
20d world-wide change of sea leve from melting of glaciers (7)
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big dave

7th March 2009, 14:38
Re: 20 down

From Chambers:

eustasy or eustacy: changes in world shoreline level, probably caused by rise or fall of the sea-level and not by subsidence or elevation of the land

This might be what you are looking for - crossing letters could help.
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terry

7th March 2009, 20:53
19d. The lowest level of any piece of water (river,lake or sea)where life exists is called the Benthic. Things that live there, either on or in the sediment are collectively called Benthos. This might be what you are looking for.
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isabel

8th March 2009, 08:15
to big dave & terry thanks for your help, the answer was eusctacy
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