Once you have obtained your salmon sample from a local store, you need to isolate the dna from it and make many copies of the coi gene using the polymerase chain reaction (pcr). for a review of how pcr works, see hint 2.

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

      n