University of Oklahoma State University professor Michael Caspari said a previous survey showed that global warming can mutate ants, and their length will be one-third of the length before the mutation. He warned: Smaller ants reproduce faster and expand their territory more easily, so the number of ants will increase dramatically in the context of global warming. From this we can infer:. ['Ant reproduction is closely related to heredity and temperature.', 'Individual ants are more adapted to high-temperature environments.', 'Global warming will reduce the number of big ants.', 'The number of ants will not increase if global temperatures no longer rise.']