Describe Biosphere 2. What were the results of this experiment and what important lesson did we learn from this experiment?
What will be an ideal response?
Varies. As the text notes: "The Biosphere 2 was a 3-acre, glass-enclosed ecosystem intended to sustain eight people for a two-year experiment, from September 1991 through September 1993. The Biosphere 2's $200 million budget was not enough to create a viable ecosystem for eight people. By the time the experiment ended, the Biosphere's air and drinking water were polluted, crops and trees had been killed by other vegetation, and 19 of the 25 small animal species the participants brought with them had died. The scientists who lived in the biosphere showed signs of oxygen starvation from living at the equivalent of an altitude of 17,500 feet." The important and costly lesson learned from this experiment was that there are no human made substitutes for natural resources!
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Which of these is an idea that explains the world and identifies what should be sacred?
A. belief B. ritual C. attitude D. religion
Interviews with African-American women during the sharecropping era revealed that they
a. became full-time homemakers and left the fieldwork and paid employment to men. b. wanted to work full-time either in the field and as domestics for white employers to make money and improve the living standard of their families. c. were pressured against their will by the white community to work more in the field and to take low-paid employment doing domestic work for white families. d. refused to do fieldwork which they defined as men's work and sought part-time work as domestics to earn income.
Most of the countries in Africa are in what stage of the demographic transition?
A. socialist stage B. first stage C. conflict stage D. second stage
The number of males per 100 females is referred to as the ________.
A. birth rate B. rate of singles C. sex ratio D. marriage rate