blank blank disc cd CDR cdrw computer computers data data transfer disc dvd DVDr dvdrw empty plastic recordable round arrow bank banking card chip economics finance metal money trade transfer box cable cat5 clutter communication communication cable cord data cable edv ICT industrial it office patch cable patch cord storage supplies switch technics technology tools ball balls biology chem chemical connected connection dna graphic health healthcare illustration ion lab laboratory microscopic molecule scheme science small technic technical byte card-reader connector digital electronics equipment flash hardware industry information memory micro plug reader slot stick usb white anchored buoy data-collecting-buoy dissolved-oxygen electronic-data-transfer estuarine estuary fish-kill-mitigation floating-device fresh-water improving-understanding monitoring-buoys moored oxygen-levels salinity salt-water scientific-advisory solar-panel solar-powered stationary tidal tide water water-quality water-quality-management