Compare factors that contribute to acute insomnia versus chronic insomnia.

I don't know about acute but here's chronic insomnia

Explanation:

Chronic insomnia is a long-term pattern of difficulty sleeping. Insomnia is considered chronic if a person has trouble falling asleep or staying asleep at least three nights per week for three months or longer.

                                                        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.