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Rehabilitate and reseed ( for hay production ) grassland around agricultural villages , where severe overgrazing has taken place . Halimeda may grow in depths up to 100-150 metres , where light levels are calculated to be only 0.05-0.08 percent of the surface intensity ( Hillis-Colinvaux , 1980 ) . But we must be careful lest we use this word in its modern sense , where it suggests our turning back simply in thought to events in the past . In departments where some workstations do not have LAN access , a central workstation should be designated so that multiple users may have access to e-mail accounts . It is anticipated that in jurisdictions such as Europe , where labelling of foods that contain transgenic plant materials is mandatory , a threshold level will be established that triggers the requirement for labelling .