What is the independent variable in the experiment? A) diameter of the bacteria colony

B) species of bacteria

C) type of antibiotic

D )Temperature

They are the conditions that you manipulate in an experiment.

its C. type of antibiotic

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

b. the carbon cycle ensures living things have a source of hydrogen