Brainliest 100% right which of the following is a contributing reason behind emerging disease? a. the absence of migration or travel in organisms b. the overuse of antibiotics c. the lack of evolution in hosts d. the lack of evolution in pathogens i'm not sure but i think it's b. the overuse of antibiotics. the silurian period occurred a. before the neogene period. b. during the hadean eon. c. after the permian era. d. during the mesozoic era.