why do different people have different dna profiles?

1) they have completely different kinds of str locations
2) they have different numbers of the sam strs
3)all 300 billion base pairs are analyzed for individuals
4)pcr generates some sequences more than other sequences

Which statement names a chemical property of iron? a: it is dense b: it becomes rusted c: it’s hard to bend d: it has a melting point

__1__ is a climate cycle where the temperature of the __2__ ocean changes because of movements of air and ocean currents. during this period, the trade winds in the south __3__ , causing the __4__ water to move from the __5__ region to the __6__ region. 1) el nino or the monsoon 2) atlantic, indian, or pacific 3) reverse, strengthen, or weaken 4) cold or warm 5) eastern or western 6) eastern or western

Which units ate used to measure both velocity and speed? check all that apply