Paleoclimatology is the science that studies ancient climates of the Earth. According to this science, there have been many ice ages and glacial ages, and they have happened because of a phenomenon known as Great Oxygenation. This means the Earth had too many plants that were producing oxygen, which stopped the Greenhouse effect and brought cold temperatures to the planet. For example, around 360 to 260 million years ago, the ice age called “Karoo” happened because of the previous Great Oxygenation, and this glacial ice covered much of what is now India and Australia.
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federalism. A system in which power is divided between the national and state governments. division of powers. Also called the separation of powers.
Four essential features: Population, Territory, Sovereignty, and Government.
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B<span>efore the introduction of public convention, presidential nominees were elected by their political parties. </span>
Answer: The world war 2 severely disrupted Europe's economies and helped set the stage for the Great Depression of the 1930s. , The Times Atlas to the Second World War . involvement in the conflict, wartime diplomacy, military strategy, and the war's economic and social implications. The question of how Japan was able to carry out its successful surprise attack on Pearl Harbor is thoroughly examined in Gordon W. The war's impact on the homefront is analyzed in William L. The most visible change involved the appearance of large numbers of women in uniform, as more than 250,000 women joined the WACs, the Army Nurses Corps, the WAVES, and the Navy Nurses Corps.
The war also challenged the conventional image of female behavior, as «Rosie the Riveter» became the popular symbol of women who worked in defense industries. Wartime transformations in women's lives are examined in Susan M. Roberts, which claimed without supporting evidence that the Japanese had received support from some Japanese Americans, helped to create a climate of opinion that led to internment. World War II marked the dawn of the atomic age. The development of nuclear weapons is thoroughly examined in Richard Rhodes, The Making of the Atomic Bomb .
The decision to drop two atomic bombs on Japan remains one of the most controversial decisions in military history.
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