Plzz answer : sodium chloride breaks down into sodium and chlorine. why is this process classified as a chemical reaction? a. a substance has been changed into a different substance. b. change can only occur in one direction. c. there is greater mass of the sodium chloride than there is of the products. d. the original molecular formula has been altered

Name the glands associated with human digestive system

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home. what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine