Every morning a graduate student turns on the light in the laboratory and then feeds the fish in the aquarium. after a couple of weeks of this routine, the graduate student notices that the fish come to the surface to feed as soon as the lights are turned on. the behavior of the fish is most likely a result of

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.