Answer:
Option (C)
Explanation:
CO₂ is one of the main green house gases on earth. A small increase in its concentration can lead to significant changes on earth. When the incoming solar radiations are incident on the earth's surface, some of the energy is absorbed by the atmosphere and the earth's surface. And some of the energy from the land surface after absorption is released into the atmosphere in the form of infrared radiations. The escaping of these radiations from earth is directly dependent on the concentration of CO₂. An increase in the amount of CO₂ will not allow these IR radiations to be removed, and this will result in the global rising of the temperature, leading to catastrophic changes.
Thus, the correct answer is option (C).
A. Can help leaders decide how to plan for the future
Chavez's legacy in Venezuela can be viewed in two totally contrasting ways, depending on who will be writing the history.
Explanation:
Hugo Chavez was one of the last communist leaders in the world, led by communism, which unlike the majority of the communist leaders, actually had a lot of support by the people. He was leader of Venezuela for long time, and his reign was only ended because he died. As a typical communist leader, Chavez wanted to have everything under control, including the resources of the country, eliminating and suppressing any opposition, and trying to make the country as self-sustaining as possible.
The majority of the people supported him, and one of the main reasons for that was that he openly opposed the United States and the corporations, and nationalized the oil and natural gas reserves. The people of Venezuela had very bad feelings for the United States because of their interference in their country, and Chavez used it to the maximum.
When future history books are written, how would Chavez be interpreted will depended mostly on who will write the history books, as well as the political climate in the country. It can range anywhere from portraying him as national hero that protected the country, its interest, and was beloved by the people, to a brutal tyrant that isolated the country, suppressed the people, and made Venezuela stagnate.
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Answer:
Photograph: bird's eye view of a site; interview: personal analysis and biased; tax records: limited accessibility; biography: unreliability of human memory.
Explanation:
There are generally always some drawbacks when considering different sources of historical information and a good researcher has to take these factors into account. Photographs are limited because they give you very little context. Interviews can be limiting because you get a personal view from just one individual. Tax records are likely protected due to privacy concerns and statutes. Biography can have drawbacks as well because the person may embellish past events or overemphasize the significance or attribute meaning in ways that are not entirely truthful or objective.
