The ocean has a tremendous amount of salts dissolved in its water and is very warm around the tropics. Yet these regions of earth house millions of aquatic species. Explain
how the warm salty waters around the equator can still produce enough dissolved
oxygen to support life.

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.