Alzheimer’s disease:
a. marks mental decline or dementia.
b. results in the progressive deterioration of brain cells.
c. both a and
b.
d. neither a nor
b.

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