BIOL 104 Human Biology Chapter 24 Human populations planetary resources conservation Post Test 1 2 The human population has grown ______________ through the years. A) slowly B) in a linear manner C) exponentially D) up and down Growth rate of a population is determined by the A) increase in the number of people per unit of time. B) number of people being born minus 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. 3 Beaches and coastal areas 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 choices are correct. 4 Why is biodiversity valuable and desirable to humans? A) medicinal purposes B) agricultural diversity C) consumptive use D) All of the choices are correct. 5 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. 6 The ____________ indicates the maximum population that the environment can support for an indefinite period. A) biotic potential B) growth curve C) carrying capacity D) mean population 7 More-developed countries (MDCs) such as the United States, Canada, and Europe are characterized by _____ population growth rate and _____ standard of living. A) high; poor B) modest; good C) high; good D) very low; poor 8 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 9 In studying human populations, 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) can be used to predict future population growth and show the distribution of people who are dependent, reproductive, and postreproductive. 10 Which of the following is a nonrenewable resource? A) coal B) oil C) iron D) All of the choices are correct. 11 Which of the following processes lead to desertification of land in semiarid areas? A) excessive irrigation B) intense fertilization C) overgrazing D) property development 12 A(n) ___________, such as those in Florida, may result from depleting ground water. A) irrigation B) aquifer C) sinkhole D) natural dam 13 It is estimated that as much as 70% of the freshwater worldwide is used for A) drinking water. B) industry. C) irrigating crops. D) bathing. 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. 15 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 16 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 17 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. 18 Unfortunately, _________ percent of coral reefs have already been destroyed. A) 10% B) 25% C) 60% D) 100% 19 Identify the alien species: A) kudzu B) zebra mussel C) dandelion D) All of the choices are correct. 20 The Gross National Product (GNP) 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) aesthetic and cultural values
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