Questions:
1. explain the difference between a protective factor
and a risk factor for addiction. give at least one
example of each.

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.

To wear the full equipment.

This movement is also referred to as  glacial plucking