Core Sediments (rounded gravel)

One 1300 cc bottle of rounded gravel sediments chosen specifically to be used with the climate proxy investigation in Unit 2 of EDC Earth Science and Lab-Aids Kit #481E - Climate Change: Organisms as Climate Indicators. One 1300 cc bottle provides enough gravel to fill 8 sediment core tubes. The EDC Earth Science curriculum and Kit #481E each contain 16 sediment tubes.