Answer:
2) a feedback mechanism that regulates blood glucose level
It's good pretty sure bro
Nitrogeneous bases
sugar
phosphate group
The clinical manifestation which supports this conclusion is that an injury to the brachial plexus which happens during birth. Erb is termed as a paralysis of the arm which is caused by an injury on upper arm's main nerves to be specifically the C5-C6 nerves.
It arrives most commonly on shoulder dystocia when there is a difficult birth. This paralysis can resolve on its own depending on nature of the damage.
#6 is A. They are all composed of one or more cells.