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Before clicking the Finish button , you can move the shape , edit its vertices , or you can delete it and redraw it . The mucus of slugs and snails besides its use in facilitating locomotion , is a contrivance for checking evaporation by surrounding the exposed parts of the bodies with a viscid medium . See the website at www.fms.treas.gov / collateral . The operculate snails , in spite of the protection which their operculum may be supposed to afford , are exceedingly sensitive to cold . See the website at www.publicdebt.treas.gov or the FRB 's Financial Services website at www.frbservices.org . The Cameroon study was conducted in the dry season , while the Bioko study was conducted in the wet season , so the studies are not completely comparable , but the richness of the Bioko fauna is undeniable . See the website at www.fms.treas.gov / mbdp .