[!tag=CD] [word=")"] □
[!tag=CD] [word=")"] □ □
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Pay-per-use is used extensively by utilities ( your gas and electricity consumption is metered , and so is most of your telephone use ) , postal services ( through the now widespread postal meters ) , city services ( parking meters ) , music industry ( jukeboxes ) , etc. Methods included field sampling of environmental compartments ( air , water , sediment , land , zooplankton , fish , seston ) , laboratory studies on the photo-transformations of mercury , and aquatic modeling using Stella as the simulation platform . Included in this analysis are potential exons ( gene-coding regions ) , gene models , CpG islands ( areas rich in bases C and G found in most mammalian genes ) , and repetitive DNA elements . The types of data available on IWIN include all standard warnings , watches , advisories , and routine data including state forecasts , short term forecasts ( nowcasts ) , zone forecasts , graphical forecasts , select satellite data , and most routine NWS products . For example , when creating asset-backed securities ( ABSs ) , cash flows from pooled assets are often classified into tranches , such as senior , mezzanine , and equity , reflecting different degrees of risks , and these tranches are sold to investors .