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Based from a huge study that was done with 5,500 respondents who lived in Europe from childhood through late adulthood found that eveningness peaked at ages a. 20 to 21 years.
The study’s results mean that a lot of people are in the stage of peak alertness during the age of 20 to 21 years old. This age is the stage of a person’s life where they are in the young adulthood stage.
The predominant form of social organization in the tropical rain forests of western and central Africa was small-scale societies led by local councils.
In a small-scale society, a person interacts with the same people in almost all social circumstances, but in a large-scale society, a person has a variety of impersonal or part-relationships, some of which are fleeting and others which are enduring, and both of which do not always overlap.
There are generally few such positions in small-scale social organization , and those that do exist tend to be integrated with the ruling class. Agrarian societies, hunting and gathering societies are a few examples of small-scale societies.
People who produce and maintain agricultural goods make up agrarian communities. Another indicator of an agrarian civilization is how well-off a nation is in agricultural output. Thus the small social organization led by local councils are more predominant in the tropical rain forests of western and central Africa.
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Temperature decreases will affect the water cycle. Since the temperature is lower, less water will evaporate. Water has a specific boiling point at which it evaporates and if it is lower than that temperature, the water cannot evaporate. Colder air holds less water vapor, which leads to less rain and can cause droughts. This will throw the entire water cycle off balance.
The last few decades have seen significant changes in the percentage of women's workforce, especially mothers with underage children, most of whom are working full-time. For example, from March 1975 to March through March 2000, the percentage of mothers with children under the age of 18 rose from 47% to 73%. Thus, According to the data of the U.S. Bureau of Labor Statistics in 2007, this percentage is 71%.
