JS Bach composed during the Baroque period, which was from 1600 to about 1750. He was particularly well known for composing in the Sacred genre, writing a number of Cantatas, â¦ Masses and Magnificats, Chorales and Oratorios.
There are 4 different blood types (A, B, O, & AB). Each blood type can either be Rh positive or Rh negative. (e.g., A+, A-, B+, B-, O+, O-, AB+, AB-). Blood type AB is the universal receiver when it comes to donating blood.
Within the ABO/Rhesus Group systems which are used to classify most blood types, there are several rare blood types. The rarest is AB-, with less than one percent of the world's population having this blood type. B-and O-are also very rare, each accounting for less than 5% of the world's population.