Matthew has discovered a new species of fish. during the summer months, the male fish separate themselves from the female fish and swim to cooler waters. during one summer, a volcano erupts and the molten rock forms a barrier preventing the male and female fish from reuniting. which of these best describes the long-term outlook for this new species of fish? a) the species would not be affected by the barrier. b) the male fish would begin to produce eggs and sperm. c) the fish would develop legs and walk across the barrier. d) the fish would become extinct as they would not be able to reproduce.

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.