The aurora borealis or northern light occur when solar flares react with the atmosphere near the north poles. the aurora give off colred light because electricity is flowing. which state of matter must the air be in for the aurora to occur? a) gas b) liquid c) plasma d) solid

 C) plasma

Natural phenomena characterized by colored lights in the sky, is caused by the interaction of charged particles of energy from the solar wind with the magnetic layer of the earth so we have turbulence and multicolored plasma clouds known as auroras arise.

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.