Why were archaea and bacteria grouped together by biologists until recently? a. they look similar. b. they have very similar dna. c. they are both very ancient organisms. d. they both perform the same ecological function.

Calcinosis is the diagnostic term that means an abnormal buildup of calcium on the kneecap (patellar) surface. it is a term uses to describe a group of disorders in which calcium deposits form in the skin. it is also referred to the abnormal deposit of calcium phosphate.