Do u think the ocean has valleys and mountains? explain

If you ever heard of a trench in the bottom of the ocean it is an underwater valley

The answer should be c.

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.