Painkilling chemicals that occur naturally in the body are known as

Witch system has the main function of the body defense

Describe the major differences between a person with good wellness and one heading toward premature death

Answer in a couple of paragraphs, 1 or 2 at the most if anything! 20 points + brainliest--> explain what all the systems in your body do to work together < --list of systems needed: circulatory systemrespiratory systemdigestive systemexcretory systemnervous system