ENV 101 Exam 3 Essays

ENV 101 Exam 3 Essays ENV 101 Exam 3 Paper ENV 101 Exam 3 Paper Essay Topic: The Secret Life Of Bees The World Health Organization regards health as primarily a matter of______ well being. Physical, mental and social Historically, the greatest threats to human health came from Pathogenic organisms ______, rather than______ are becoming the leading causes of disability and premature death worldwide. Chronic conditions such as cardiovascular disease; infectious diseases such as malaria Infectious diseases such as diarrhea are closely linked to Malnutrition Hazardous substances______ while toxins are______. Are dangerous substances; poisonous substances Toxic substances are dangerous because they React or interfere with specific cell functions Which of the following practices contributes the least to antibiotic or pesticide resistance? A person takes the full course of the appropriate antibiotic when she has a bacterial infection Among the most important characteristics of chemicals in determining their environmental risks is/are All of these The biomagnification of DDT demonstrates that Higher trophic level organisms can concentrate toxins in a type of inverse biological pyramid. Most people do their own personal risk assessments based upon Personal biases and preferences as well as logic Undernourished parents often raise children who are undernourished because the parents All of these are reasons for the vicious cycle Food security has to do with The ability of a population to obtain food on a day-to-day basis People can suffer malnourishment if they consume large amounts of_____instead of______. Fat and sugar; vitamins and protein People who subsist on starchy foods such as cassava, potatoes and white rice Often receive insufficient protein The three crops that humans rely on for the majority of nutrients and calories are Wheat, rice and maize (corn) Most humans rely on just a few of th eworlds animal and plant species for food because only a few Food types are what we are accustomed to eating Which of the following does not describe the status of the worlds wild fisheries? Fish farming has allowed wild fish to recover worldwide Which of the following is the most correct definition of soil? All of these adequately describe soil The critical organic component of soil that gives it its structure is termed Humus Topsoil contains predominantly Mixed organic material and mineral particles In developed countries, the most recent increases in agricultural productivity have come from New crop varieties About what portion of world freshwater withdrawals is used for agriculture? 3/4 Which is the best cropping method for reducing erosion? Rotating corn, wheat and clover Which of the following uses the least amount of energy in industrialized farming practices? Drying the crops Green manure is Green plants, especially legumes that are planted and then plowed under Worldwide, traditional and native varieties of food crops have______ since the introduction of green revolution varieties. Been widely replaced by new varieties Fifty years ago, there were several hundred varieties of wheat grown in teh Middle East. No a few of the more modern high responder varieties have replaced the indigenous species. What are the implications of this change? Genetic resources are diminished and an epidemic of wheat disease is highly likely due to the reliance on few species The first genetically modified animal for human consumption is a salmon with extra growth hormones. Which of the following is not a concern about this animal? These are all worries about the GM salmon Which of the following is the best way to ensure soil health? Strip farming and leaving residues on fields after harvest The benefits of leaving crop residues on a field after harvest include All of these are correct One of the ecological benefits associated with aquaculture is the organic material generated from the aquaculture tanks. The nutrients increase the health and productivity of the surrounding natural ecosystem. False Agricultural cropland is shrinking worldwide. True Buying shade grown coffee and cocoa has a minimal effect on local ecosystems where they are grown. True Terracing is more sustainable than conventional farming, but is also more expensive. True Agricultural (farm) subsidies are especially effective in helping preserve small family farms. False Pest organisms tend to be Generalist species Of the millions of living species, about ____ cause 90 percent of the worldwide crop damage. 100 Significant agricultural monetary losses are due to the destruction of _____ through pesticide spray drift and residues on flowers. Honeybees Most of the pesticides applied in the United States are used in Agriculture Natural organic pesticides are not All of these are characteristics of natural organic pesticides In terms of agriculture, pesticides have lead to _____ for consumers All of these are correct Approximately ______ percent of the pesticides we use never reach the intended target. 90 Why are pest predator populations so adversely affected by broad-spectrum pesticides? Predators in higher trophic levels are more likely to be wiped out than lower trophic levels According to your instructor, what are the two types of â€Å"overpopulation† which environmental science must contend with? people and consumption So far, as described in â€Å"The Last Straw,† there have been no attempts to place dams on the Indus River in Kashmir to increase Pakistan’s water security because: Pakistan fears these dams could be used as weapons in case of war with India. The Indus Waters Treaty, as pointed out in â€Å"The Last Straw,† has survived nearly 50 years and three wars between India and Pakistan. True As expressed in â€Å"How to Stop Climate Change: The Easy Way,† such dire circumstances in the Earth’s system as the collapse of the Amazon rainforest, or the release of methane from thawing Siberian permafrost, represent the crossing of: tipping points As brought out in â€Å"How to Stop Climate Change: The Easy Way,† considering the relative consequences, the author would rather see China building two nuclear reactors weekly than two: coal-fired plants As argued in â€Å"How to Stop Climate Change: The Easy Way,† when it comes to global warming, many people, subconsciously at least, actually want to be lied to: True As mentioned in â€Å"Global Warming Battlefields,† Al Gore was recognized for his efforts to raise awareness about global warming when he shared the 2007 Nobel Peace Prize with: IPCC As related in â€Å"Global Warming Battlefields,† a growing body of evidence suggests that severe climate changes have tended to increase the risk of resource-related conflict, as was apparent during 1300-1700, a span of time known as the: Little Ice Age As noted in â€Å"Global Warming Battlefields,† much research has been devoted to the causes of state collapse and the rise of ethnic militias, but no research has identified a clear, consistent set of precipitation factors. True As stated in â€Å"Executive Summary from Secretariat of the Convention on Biological Diversity,† the class of animals whose member face the greatest risk of extinction is: amphibians As asserted in â€Å"Executive Summary from Secretariat of the Convention on Biological Diversity,† the earliest and most severe impacts of dramatic biodiversity loss and the accompanying degradation of ecosystem services would be faced by: the poor According to â€Å"Executive Summary from Secretariat of the Convention on Biological Diversity,† in some scenarios, climate change can be mitigated while maintaining and even expanding the current extent of forests and other natural ecosystems while avoiding additional habitat loss. true According to â€Å"When Diversity Vanishes,† the most dramatic diversity collapses: are mass extinctions As reported in â€Å"When Diversity Vanishes,† in finance, diversification reduces risk by: spreading money among assets that respond differently during market moves As pointed out in â€Å"When Diversity Vanishes,† in expert judgment, the average judgment of a group is better than individual performance. true Historically, up until the middle ages, populations were mostly limited by Disease, famine and war ____________ are the most numerous vertebrate organisms on Earth Fish Human population growth most closely resembles J-shaped growth curve The world human population reached 1 billion in about _________ and passed ____________ in 1999. 1800; 6 billion The population theory held by Thomas Malthus was that the human population would Outstrip its resources, then suffer starvation and misery Neo-Malthusians argue that Malthuss eighteenth century theories apply to similar circumstances today Technological optimists argue that technological advances have Proved Malthus wrong in his predictions of famine and disaster Malthus and Marx Disagreed about the root causes of overpopulation, poverty and social upheaval Human ingenuity and intelligence as the ultimate resource is the central theme in the argument of Julian Simon Demography is the science that describes Population changes and characteristics Ninety percent of the worlds population growth in the next century is expected to occur in Less-developed countries Why is Russias population declining? The standard of living has decreased leading to higher death rates and lower birth rates The I = PAT formula says that our environmental impacts (I) are the product of The population size times affluence and the technology used to produce goods and services consumed Crude birth rates are measured in terms of the number of children born Per 1000 people each year The total fertility rate is the number of children born To the average woman during her lifetime There is some evidence that population growth today is ____________ rather than ______________. Slowing slightly; continuing to accelerate The main cause of world population growth in the past 300 years has been Falling mortality The difference between total growth rate and natural increase is that total growth rates Include immigration and emigration as well as births and deaths The average age that a newborn can expect to attain in a given society is referred to as Life expectancy The population represented by the age class histogram on the right will Grow substantially in the future The age class histogram on the right could represent the population of Uganda The age class histogram on the left could represent the population of Singapore A pyramid-shaped age structure histogram is characteristic of a(n) _________ population Expanding A dependency ratio is a comparison between the numbers of Working and nonworking people Pronatalist pressures are influences that lead people to Have more children Women who ________ are least likely to have many children. Are able to earn an income for themselves The demographic transition refers to a countrys change from High birth and death rates to low birth and death rates The most industrialized country listed is Country A The message from author Garret Hardins lifeboat ethics is that Helping poor people will simply increase their rate of reproduction Proponents of social justice believe that environmental and social problems will decrease if Resources are distributed fairly One of the _________ effective ways to stabilize populations is to _________. Most; decrease child mortality Less developed countries can best argue that developed countries are primarily responsible for overpopulation problems because Less developed countries were many times impoverished by colonialism Family planning means enabling people to Decide in advance how many children they should have The most pessimistic projection of population growth projects the human population to reach 25 billion by 2150. True 1. The proportion of the developing world’s population, as cited in â€Å" Where Oil and Water Do Mix: Environmental Scarcity and Future Conflict in the Middle East and North Africa,† that has no access to clean water is: about one third. 2. As discussed in â€Å"Where Oil and Water Do Mix: Environmental Scarcity and Future Conflict in the Middle East and North Africa,† two common patterns of scarcity are: resource capture and ecological marginalization. 3. As noted in â€Å"Where Oil and Water Do Mix: Environmental Scarcity and Future Conflict in the Middle East and North Africa,† social pressures created by environmental scarcity may cause state power to crumble. True 4. As identified in â€Å"The Big Melt,† the plateau known as â€Å"The Roof of the World,† the highest and largest plateau in the world, is the: Tibetan Plateau. According to â€Å"The Big Melt,† China angered Indochina by damming the: Mekong River. 6. As quoted in â€Å"The Big Melt,† Chinese glaciologist Yao Tandong believes that the shrinkage of the glaciers will lead to ecological catastrophe. True 7. In the spring of 2008, as put forth in â€Å"The World’s Water Challenge,† the international community failed to predict all of the following related to water scarcity except: migration patterns related to famine. 8. More than half of the water suitable for human consumption, as described in â€Å"The World’s Water Challenge,† is used for: agriculture 9. Of the 1.8 million people who lose their lives due to unsafe water each year, as noted in â€Å"The World’s Water Challenge,† almost half of them are children. False As claimed in â€Å"Climate Change,† the current position in the scientific community with regard to climate change is that: climate change is dangerous and is caused by humans. As argued in â€Å"Climate Change,† the toughest part of the climate-change equation is the: speed with which global warming is occurring and how little time is left to make changes. As noted in â€Å"Climate Change,† while global warming will hurt some areas of the world, it will help other areas with extended growing seasons, allowing those areas to ease global food shortages over the long term. False According to â€Å"The Last Straw,† one of the greatest potential new threats to Pakistan’s stability could come from: the melting of the Himalaya glaciers.