Marine science two separate, but genetically similar species would be classified under the same [__]. genus family kingdom species question 5 the theory of evolution by natural selection is called a "theory" because it is supported by scientific facts. it is supported by scientific hypothesis. it is the opinion of many scientists. it may or may not be true. question 6 the process of natural selection occurs when only a certain color of a species will have offspring. some individual organisms are better able to find food in their habitat diseased organisms in a habitat die. organisms within a species, question 7 a species of fish that blends in with the colors and textures of a coral reef is an example of adaptation of all coral reef fish. evolution by natural selection. *** a trait passed on to all fish. a symbiotic relationship. question 8 comparing the physical structure of a fish found in the arctic ocean to a similar fish found in the southern pacific ocean is one example of the science of comparative anatomy genetics biogeography taxonomy question 9 examining physical structure of organisms to determine common ancestry is the science of biogeographical analysis molecular biology comparative anatomy taxonomy question 10 the most broad category in the classification hierarchy is species domain genus kingdom