Which describes the foramen magnum? large opening at the base of the skull that the spinal cord passes through shallow depression on the skull to which the jaw bone attaches large projection on the skull to which the jaw muscles attach tiny spaces between the fused bones of the skull

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