Drag the tiles to the correct boxes to complete the pairs. Identify the four spheres involved in the carbon cycle.

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

The higher you go up the less oxygen there is