Why do dark-colored rock pocket mice on dark lava flows have white bellies? A. There is no selection for dark bellies by visual predators.

B. White bellies protect them from insects found in the desert

C. There is a reproductive advantage to having a dark belly.

D. White bellies are an important part of camouflage.

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