6. what are the three main zones of the open ocean?

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

We can use solar powered cars or ride bikes instead of cars that burn fossil fuels

Gravitational force i believe