1:Carbon dioxide is a product 2:Carbon dioxide is a reactant
3:Carried out in animals
4:Carried out in plants
5:Chemical reaction
6:Oxygen is a product
7:Oxygen is a reactant
8:Produces usable energy source​

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