Which is a type of oxygen that forms a protective layer miles above the earth

                                                        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.

hypoglycemia is a common condition that can affect the quality of life of people with diabetes and their families. it is important to know the symptoms and the means to treat it, as well as the causes and the measures to be taken to prevent it.

liquid or gel-shaped glucose quickly raises blood sugar and stimulates energy - no need to chew.

each sachet contains 15g of fast-acting glucose (d-glucose), as reccomanded.