Which of the following best describes the hydrosphere a. bodies of water on the surface of earth, but not the water in the atmosphere or underground. b. salt water in the oceans, but not fresh waterc. water that is underground or mixed into the hemisphered. water in any location on earth, including the atmosphere, surface, and underground

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos