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1 | |
What does a graph of human population growth show? |
| | A) | increase in the number of people per unit of time |
| | B) | number of people being born versus the number of people dying |
| | C) | number of children living per each two adults |
| | D) | number of people times the number of children each one has per year |
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2 | |
What is the growth rate of a very small population of 6,000 that had 200 births in one year, but also experienced 80 deaths that same year? |
| | A) | 2% |
| | B) | 3.33% |
| | C) | 12% |
| | D) | 1,200 |
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3 | |
Which of the following factors cause a decrease in population growth? |
| | A) | biotic potential |
| | B) | birthrate |
| | C) | carrying capacity |
| | D) | environmental resistance |
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4 | |
More-developed countries such as the United States, Canada and Europe are characterized by: |
| | A) | high population growth rate and poor standard of living. |
| | B) | modest population growth rate and good standard of living. |
| | C) | high population growth rate and good standard of living. |
| | D) | very low population growth rate and poor standard of living. |
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5 | |
The rapid increase in the human population between 1850 and 1950 was due to which of the following factors? |
| | A) | decreased death rate |
| | B) | increased birthrate |
| | C) | increased biotic potential |
| | D) | newly conquered territories |
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6 | |
Why are many populations in less-developed countries continuing to experience high growth rates? |
| | A) | better economic conditions |
| | B) | high birthrates |
| | C) | improved housing |
| | D) | world aid in the form of food |
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7 | |
Age-structure diagrams |
| | A) | can be used to predict future population growth. |
| | B) | show the distribution of people who are dependent, reproductive, and postreproductive. |
| | C) | show the relative number of young women compared to older women. |
| | D) | All of the above are correct. |
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8 | |
Which of the following are renewable resources? |
| | A) | diamonds and gold |
| | B) | oil and natural gas |
| | C) | solar energy |
| | D) | virgin forests |
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9 | |
About how many times will the resources be needed in the year 2050? |
| | A) | no change from the present |
| | B) | 2 times |
| | C) | 4 times |
| | D) | An accurate prediction cannot be made. |
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10 | |
Beaches are attractive places to live; however, bringing the population close to the water's edge poses several problems. Which of the following are caused by people living near the coastline? |
| | A) | beach erosion |
| | B) | loss of coastal wetlands and salt water marshes |
| | C) | loss of habitat for marine organisms |
| | D) | All of the above are problems caused by people living near the coastline. |
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11 | |
Which of the following processes lead to desertification of land in semi-arid areas? |
| | A) | excessive irrigation |
| | B) | intense fertilization |
| | C) | overgrazing |
| | D) | property development |
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12 | |
People have begun to settle in the rain forests. In what way has this been beneficial? |
| | A) | lands have been cleared for logging and farming |
| | B) | loss of biodiversity |
| | C) | loss of soil fertility |
| | D) | There have been no benefits to settling in the rain forests. |
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13 | |
Most of the Earth's water is found in |
| | A) | groundwater. |
| | B) | ice caps, ice sheets, and glaciers. |
| | C) | lakes and rivers. |
| | D) | oceans. |
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14 | |
Saltwater intrusion is the |
| | A) | mixing of saltwater and freshwater in aquifers. |
| | B) | mixing of surface saltwater and freshwater in rivers joining the oceans. |
| | C) | process of purifying saltwater for drinking and agriculture. |
| | D) | runoff of saltwater from irrigation systems. |
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15 | |
Which of the following is the best solution to the shortage of water facing much of the world? |
| | A) | building dams |
| | B) | improving agricultural use of water |
| | C) | pumping of deep aquifers |
| | D) | purifying salt water |
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16 | |
Which of the following methods are effective for conserving water? |
| | A) | development of drought resistant plants |
| | B) | instillation of drip irrigation systems |
| | C) | treatment and use of waste water for irrigation |
| | D) | All of these methods would be effective in conserving water. |
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17 | |
Which of the following methods have allowed us to meet the increasing demand for food? |
| | A) | development of food substitutes |
| | B) | increased fishing of the seas |
| | C) | improved trapping and hunting |
| | D) | modernization of farming |
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18 | |
Which of the following would be a positive choice farmers could make with regard to their impact on the environment? |
| | A) | apply pesticides to reduce crop damage |
| | B) | increase irrigation to increase productivity |
| | C) | plant one or two genetic varieties of each crop |
| | D) | use biological pest control |
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19 | |
The world hunger situation could best be addressed by |
| | A) | eating lower on the food chain. |
| | B) | facilitate fishing in less developed countries. |
| | C) | increasing funding for corn production as cattle feed. |
| | D) | producing more animal protein. |
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20 | |
With improved technology and an increased fishing fleet, the harvest of fish in the last decade in the United States has |
| | A) | declined significantly. |
| | B) | increased more than in the last 50 years. |
| | C) | increased due to the harvest of previously discarded fish. |
| | D) | remained constant due to an increase in the available fish. |
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21 | |
Most of the world's energy comes from which of the following sources? |
| | A) | hydroelectric power |
| | B) | nuclear power |
| | C) | oil, natural gas and coal |
| | D) | solar radiation |
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22 | |
Greenhouse gases get their name because they |
| | A) | are produced by plants. |
| | B) | are above the average atmospheric temperature. |
| | C) | hinder infrared heat from escaping. |
| | D) | produce solar radiation. |
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23 | |
Renewable energy sources include all of the following except: |
| | A) | 235 uranium. |
| | B) | geothermal energy. |
| | C) | hydropower. |
| | D) | wind power. |
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24 | |
Worldwide hydropower generates approximately _____ of all electricity. |
| | A) | less than 10% |
| | B) | 19% |
| | C) | 75% |
| | D) | 98% |
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25 | |
Which of the following are potential benefits to using hydrogen as a source of fuel? |
| | A) | clean burning |
| | B) | lessen dependence on fossil fuels |
| | C) | serves as power for vehicles |
| | D) | All of the above are potential benefits. |
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26 | |
Heavy metals are dangerous to humans because they |
| | A) | are found in large quantities in the oceans. |
| | B) | discolor teeth and weaken bones. |
| | C) | enter waste water through urine. |
| | D) | inhibit enzyme activity. |
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27 | |
Superfund monies are available for the Environmental Protection Agency to oversee the |
| | A) | clean up of hazardous waste disposal sites in the United States. |
| | B) | development of new synthetic fuels. |
| | C) | proper disposal of synthetic organic compounds. |
| | D) | restoration of strip mining sites. |
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28 | |
Biological magnification of industrial wastes occurs when |
| | A) | fish and other aquatic organism feed directly on the waste of other animals. |
| | B) | industrial wastes are concentrated as they move up the food chain. |
| | C) | they are decomposed by both bacteria and algae. |
| | D) | vegetation surrounding rivers and lakes prevent the wastes from entering the water. |
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29 | |
Which of the following would be a logical step toward becoming a sustainable society? |
| | A) | focus more research on developing cleaner uses of fossil fuels |
| | B) | increase mining of metals as potential sources of fuel |
| | C) | maximize the use of renewable energy sources |
| | D) | utilize natural ecosystems for single family homes |
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30 | |
The Gross National Product is an indicator of economic well-being. A similar ecological indicator would include which of the following factors? |
| | A) | aesthetic value |
| | B) | cultural value |
| | C) | value to LCDs |
| | D) | only a and b |
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