A_ degree burn is when all layers of skin are damaged

Fourth

Explanation:

A fourth degree burn is when all layers of the skin are damaged. A third degree burn burns into the fat layer, while a fourth degree burn burns through all the layers of the skin. In both cases, immediate medical help is needed.

3rd degree burn

Explanation:

A first degree burn effects, you guessed it, the first layer of skin, the epidermis.

A second degree all the way down to the dermis, the second layer.

A third degree burn effects all layers of skin down to the tissues below.

A fourth degree burn is a subset of a third degree, but it implies that it goes all the way to the muscle or bone.

you aren't worthless, you are a one of a kind person who, deserves happiness like anyone else, you may not get it but everyone deserves happiness. i hope this .

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.