What is the real color of the grass ? is there a different scientific color ?

It depends on the type of grass, it can be yellow, brownish, or most commonly green. I don't think there's a scientific name for the color if that is what you were asking.

The color can diffrer from green to yellow to brow to orange . it all depends

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