Reaction to loss for individuals in their young and middle adulthood is their ambivalence about putting their own needs first

answer; i do believe that the correct answer is ( portal of exit in the chain of transmission); good luck

need more informotion

take a break move to stretching and slowly work back into physically exercising if the problem continues go to a doctor or physical therapist

                                                        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.