A backup of sewage in the operation’s storeroom would be a reason to contact local regulator authority because it is considered what by serve safe

Depending on the organism the number of in a cell may change

Adistinctive characteristic of mammals that is not observed in other vertebrates is

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