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Marine Life and SaltwaterSea and ocean water have an average salinity of 3.5%. This salt consists of various minerals, primarily sodium and chloride. Saltwater is essential for the proper functioning of marine organisms' bodily processes.Life in SaltwaterOsmoregulation (Water and Salt Balance): Marine organisms use a mechanism called osmoregulation to maintain the balance of water and salt in their bodies. For example, fish can expel excess salt through their gills and kidneys, thereby preventin

On 29 January 2025, NASA made an announcement regarding the scientific findings from the OSIRIS-REx mission (Origins, Spectral Interpretation, Resource Identification and Security – Regolith Explorer), which delivered a sample from the Bennu asteroid to World in 2023. SeptemberThis image sequence, captured by the OSIRIS-REx spacecraft, shows Bennu in a full rotation from a distance of approximately 50 miles (80 kilometers). (NASA/Goddard/University of Arizona)At the briefing facilitated by Live