The right answer for the question that is being asked and shown above is that: "TRUE." The wide variety of organisms present in coral reefs and their complex relationships make coral reef preservation an important priority.
Its called adaption when an animal changes itself to be able to survive
Salinity is the concentration of dissolved salts in water. Density is the degree of compactness in a substance. By determining the salinity of a substance, you would also be determining the density.
Cell, tissue, organ, organ system, organism...................................................................
It would be slightly worse than taking it off in space. The atmosphere on the surface of Mars is nearly a vacuum, so the astronaut would do well to notice the boiling saliva and tears and reseal the helmet immediately. Failing that, he or she would pass out in a few seconds, which is perhaps just as well. In space, you can only cool off by evaporation or by radiating infrared into space. On Mars, the tenuous air is just barely thick enough to conduct heat, and it’s generally colder than northern Siberia in the January. So…yeah. Don’t do that.