What is a possible advantage of genetically modified crops? a) new 'super weeds' that dominate fields may result. b) new varieties of pest resistant crops can be produced. c) new varieties of allergens may emerge from the genetically modified crops. d) it would replace the natural flora and fauna biodiversity of a particular area.

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .