The projected growth in population over the next half century may more directly affect economic progress than any other single trend. In 2050, the world population is projected to reach:
a. Between 7 and 8 billion
b. Between 8 and 9 billion
c. Between 9 and 10 billion
d. Between 10 and 11 billion
       
The continuing decline in biodiversity is one of the main environmental threats. What is the percentage of mammals that are vulnerable to or in immediate danger of extinction?
a. 15
b. 25
c. 35
d. 50
       
The fact that intact human bodies have recently been found in high mountain glaciers indicate that:
a. The earth is getting warmer.
b. The Earth is getting closer to the sun.
c. The glaciers have started moving.
d. Archeological techniques have become more efficient.
       
On a global basis, what percentage of the water used for human purposes is used for agriculture?
a. 70
b. 80
c. 90
d. 95
       
Which of the following is considered among the most dangerous diseases today?
a. Ebola virus
b. HIV disease
c. Mad cow disease
d. All of the above
       
Which of the following cities is the largest, with a population of 28 million?
a. Bombay
b. Mexico City
c. Tokyo
d. New York
       
If cities continue to grow as projected they will contain more than half the population by 2010, making the world more urban than rural for the first time in history. True or false?
a. True
b. False
   
Since the mid-20th century, grain land area per person has fallen from 0.24 hectares to:
a. 0.18
b. 0.12
c. 0.10
d. There has been no change.
       
The area of tropical forests sacrificed each year is:
a. 9 million hectares - nearly the size of Hungary
b. 11 million hectares - nearly the size of Bulgaria
c. 14 million hectares - more than the size of Greece
d. 17 million hectares - nearly the size of the three Baltic states
       
In the second half of the last century the oceanic fish catch expanded from 19 million tonnes to more than 90 million tonnes. Oceans can not sustain an annual catch of more than:
a. 15 million tonnes
b. 55 million tonnes
c. 95 million tonnes
d. 125 million tonnes
       
In recent years, annual production of cars has averaged:
a. 15 million
b. 37 million
c. 55 million
d. 105 million
       
In terms of renewable power sources, the most exciting technological advance comes from:
a. Solar roofing materials
b. Wind power generators
c. Biomass combustion
d. Tidal power utilisation
       
Today, the worldwide life expectancy has risen from 35 years to:
a. 44 years
b. 55 years
c. 66 years
d. 77 years
       
Worldwide, what is the estimated number of people who are undernourished and underweight today?
a. About 550 million
b. About 700 million
c. About 850 million
d. Over 1 billion
       
Today, the current production of petrol is 67 million barrels per day. If petroleum use per person were to reach the current US level, the world will consume:
a. 460 million barrels per day
b. 360 million barrels per day
c. 260 million barrels per day
d. 160 million barrels per day
       
Which of the following statements corresponds with the sustainable development concept?
a. The number of trees cut should not exceed the total planted.
b. Carbon emissions should not exceed the capacity of nature to process atmospheric carbon dioxide.
c. Soil erosion should not exceed the natural rate of new soil formation.
d. All of the above.
       
The sort of education that we need now to save the Earth is not just a matter of dissemination of information, for the planet is already awash in information. The education needed, rather, is the sharing of wisdom. True or false?
a. True.
b. False.
   
Which of the following messages did Pope John Paul II send to Europeans just before the political changes in Central and Eastern Europe?
a. We must make peace between man and the environment, thus protecting the entirety of nature.
b. We must make peace between man and his fellow man, thus, that the European citizen would accept the other inhabitants of this continent who have different cultures and value systems.
c. We must make peace between man and his own identity, thus, we must create again an entire and indivisible vision about the man and the world.
d. All of the above
       


 
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