"life as we know it is impossible without water." explain why a scientist might make this statement. give two examples to support your answer.

As a small change in a person's dna can cause a genetic disorder

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

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