1. The document provides questions about the differences between benthos and plankton, the definition of nekton, which of the Atlantic ocean, Colorado river or polar ice cap would have salinity, and one difference between saltwater and freshwater other than salt. 2. It then provides information about a Discovery Education video called "Oceans blue with Philippe Cousteau: Atlantic". 3. The rest of the document contains chemistry questions about identifying elements based on their number of protons, neutrons, electrons and position on the periodic table. It asks the student to identify elements like boron, helium, calcium, silver, neon and elements in various groups and periods.