IUGR has various causes. The most common cause is a problem in the placenta (the tissue that carries oxygen, food and blood to the baby).Birth defects and genetic disorders can also cause IUGR.UGR has various causes. The most common cause is a problem in the placenta (the tissue that carries oxygen, food and blood to the baby).
Making the world better, one answer at a time. Ethel Rosenberg was the person who played the minor role in the passing of the atomic secrets to the Soviet. He was later convicted for passing the atomic secrets to the Soviets.
â[Truman]â¦and Clement Attlee, the British prime minister, were prepared to use nuclear weapons to prevent Berlin's fall to communism, but the Soviet Union knew that the Americans did not have enough nuclear weapons to deal with both Berlin and China.nd yet, Stalin and Beria estimated that the number of atomic bombs possessed by the United States was much lower based on the intelligence provided by the atomic spies, including the physicists Klaus Fuchs (photo, right) and Theodore Hall.