Answer:
The greenhouse effect is often caused by the atmospheric accumulation of gases. Those gases tend to be Carbon Dioxide and/or Methane
Explanation:
The greenhouse effect is caused by these gases because Carbon Dioxide and Methane absorb some of the heat that radiates off of Earth's surface, trapping the heat and then the greenhouse gases absorb the heat and it leads to a rise in its temperature
Zinn said that study of history should be done from the point of view of the common man. It should not be done from the point of view of the historians or the politicians.
<u>Explanation:</u>
Zinn thought that the way we study history is very boring and that we have been bent under the heavy weight of the history books which lean up on us. They have set from the point of view of the historians and the politicians. This makes it very boring for us to read this subject.
History should rather be studied from the point of view of the common man so that they can understand it better because through this way they can related to it in a better way. When it is told in the form of a story, the interest of the people increases.
Roosevelt’s political experiences before presidency include:
Governor of New York (1929-1932)
Assistant Secretary of the Navy (1913-1920)
New York State Senator (1911-1913)