C + O2 + CO2
What type of reaction occurs when carbon dioxide is formed from carbon and oxygen?

combustion reaction.

Explanation:

It is a combination reaction as carbon combines with oxygen to form carbon dioxide. It is a combustion reaction as carbon is burnt in the presence of oxygen.

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.

C) the increase in atmospheric pressure pushes the walls of the balloon outward thus making it  is the answer.hope i you.