8. Which of the following is true of osmosis? a. Osmosis is the movement of oxygen across a membrane. b. Osmosis requires the use of the energy molecule ATP. c. Osmosis is a type of passive transport. d. Osmosis moves against the water concentration gradient.​

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