Answer:
Sjögren's syndrome is a disease in which the body's defense system (immune system) attacks healthy tissues causing dryness of the mouth, eyes and other membranes of the body that secrete mucous.
Answer:
Bipolar disorder is a mental disorder that causes unusual shifts in mood, energy, activity levels, concentration, and the ability to carry out day-to-day tasks.
Explanation:
It is D a professional health but that reliable B the internet that has the most infomation
Starting with the hardest it would be corundum, feldspar, apatite, calcite, talc.