11. anxiety, moodiness, and feeling scared about the future are all common signs of a. distress. b. everyday life. c. eustress. d. being productive at work or school.

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