Dna is composed of repeating structural units called

In general, how long does it take to accomplish a long-term goal? a.a few days to a weekb.a few weeks to a monthc.a few months to a yeard. more than a year

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

In "the man in the water," what was the remarkable occurrence that rosenblatt reported?