Aquatic Ecosystem Crossword Puzzle

QUESTIONS LIST: upwelling : vertical flow of ocean water, photic : layer of water that light penetrates, benthic : ecological region located in the lowest level of the water body, estuary : body of water where a river drains into a lake or ocean, salinity : concentration of salt in water, neritic : abundant ocean zone above the continental shelf that is approximately 200 metres in depth, limnetic : region far from shore where plants can't root, inlandsea : large body of water in the middle of the continent, littoral : tidal or shallow area near the shore, aphotic : layer of water where photosynthesis cannot occur, wetland : partially submerged ecosystem characterized by its high productivity, brackish : water with salinity in between that of ocean and fresh, floodplain : land adjacent to a river that is submerged during the wet season.