Which of the following descubes an air mass with the symbol
a tisa cold a mass over an ocean
c it is a warm air mass over an ocean
is a warm air mass over a continent d it is a cold air mass over a continent
Please select the best answer from the choices provided

answer; /// i believe that the correct answer is (50%);

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.