Which of the following is not true of enzymes?

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

C14 dating since carbon is present in both living and no living objects .

Then it is june the conclusion to the second sentence is just restating "if it is june then it is summer"