Agroup of scientists wants to test the effects of decreased oxygen levels in the water on a population of albacore. what result from this experiment would show natural selection in progress? increased reproductive success of individuals who have the ability to survive a variation in oxygen levels migration of the albacore population to environments with more dissolved oxygen increased reproduction by the albacore population in order to match the increased death rate development in the next generation of new gills that are more efficient at extracting oxygen