Carbon dioxide emissions are contributing to climate change, which is causing average global temperatures to increase. these temperature increases have led to a loss of sea ice in the arctic. populations of polar bears, which depend on sea ice as part of their habitat, have declined as a result of this loss. the rate of arctic sea ice loss is predicted to increase if the current temperature trends continue. what is the best long-term solution to maintain polar bear populations? a. introducing plants capable of bioremediation to the arctic b. replacing fossil fuels with renewable energy sources c. identifying new sources of fossil fuels around the world d. establishing several protected regions in the arctic