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

The influenza virus cause the flu, but not other diseases. why?

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.