Before 1700, wolves roamed over almost all of North America; coyotes were found mostly west of the Mississippi. White-tailed deer lived throughout the eastern half of the continent. In the eastern United States, most of the land was covered with coniferous or deciduous forests. When Europeans arrived, they cleared most of the forests, planted crops, raised livestock, and exterminated the wolves. Based on what you have learned in this chapter and its Case Study, what do you think happened to the populations of coyotes and white-tailed deer between 1700 and now. in terms of their range and abundance, and to the types of vegetation in much of the eastern states (outside of cities, suburbs, and farms)? Why?
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Chapter 31 Solutions
Biology: Life on Earth with Physiology (11th Edition)
- According to "The Complex Evolution of Homo sapiens", what happened to large animals in the areas where our species migrated? A.Nothing happened to large animals when we migrated into their territories B.They increased in number soon after we migrated into their area C.They died out soon after we migrated into their area D.We domesticated them soon after we migrated into their areaarrow_forwardWildebeest are species of antelope found in southern Africa. The wildebeest herd in Serengeti National Park, Tanzania, is the largest herbivore herd on Earth. Scientists began monitoring the sizes of the Serengeti's large mammal populations in the 1960s. Over the next few decades, they noticed something unusual: the wildebeest population was increasing at a rate much faster than before. The scientists determined that this increase was due to several factors. One factor was a vaccination program that eradicated rinderpest, a viral disease that kills wildebeest. Based on the figure, what kind of population growth model would you use to represent wildebeest (circles) populations? wildebeest zebra 1960 1970 1980 1990 2000 year Figure 1. Wildebeest and zebra populations in the Serengeti from the 1950s to 2010. vaccination campaign 00000L 000000 000009 000007 populationarrow_forwardWhat is the main reason that infectious diseases are becoming more common in modern times? A. Global population increase which brings humans farther from wild animals and their environments. B. Global population decrease which brings humans closer to wild animals and their environments. C. Global population decrease which brings humans farther away from wild animals and their environments. D. Global population increase which brings humans closer to wild animals and their environments.arrow_forward
- Which of the following lead to the decline of grey wolf population in the US northwest in the early 1900s? A. disease B. starvation C. huntingarrow_forwardWhat is the main reason that infectious diseases are becoming more common in modern times? A. Global population decrease which brings humans farther away from wild animals and their environments. B. Global population increase which brings humans closer to wild animals and their environments. C. Global population decrease which brings humans closer to wild animals and their environments. D. Global population increase which brings humans farther from wild animals and their environments.arrow_forwardA population of lizards in Northern California is brown and is not poisonous to birds. A population of lizards in Southern California is orange and is poisonous to birds. In central California, where the two species overlap, a new species of non-poisonous, orange lizards arose. Which of the following statements best explains the existence of non-poisonous orange lizards? A) Non-poisonous brown lizards changed color once they noticed birds did not eat orange lizards. B) Non-poisonous orange lizards have a selective advantage since birds avoid orange lizards. C) Non-poisonous lizards turn orange by eating orange flowers and then pass the trait on D) Non-poisonous orange lizards have a selective disadvantage since they cannot blend in. E) Non-poisonous brown lizards are more attractive to mates.arrow_forward
- O Villay Use the passage to answer the question. Mule Deer A) In a short paragraph, propose a hypothesis to test the effect of a zoned reserve on mule deer populations. Justify your hypothesis based on your This image shows a male mule deer (Odocoileus hemionus), which is native to western North America. Named for their large ears, mule knowledge of zoned reserves. deer are hunted for sport and food under strict management B) In 1-2 short paragraphs, outline a field experiment to test your hypothesis on the effect of a zoned reserve on mule deer populations. Describe your control group, experimental group, and the data you would collect. Identify at least two environmental factors that could affect your data collection and practices, such as designated hunting seasons and limits on how many deer a hunter can take. Imagine a scenario where the local mule deer population has declined after a harsh winter. Wildlife management agencies have how you would address them, if possible. proposed…arrow_forwardThe graph shows the worldwide human population from 1950 to 2050. Data for the future years are predictions. According to the ideas of Thomas Malthus, what are the predicted changes to the human population after 2050? A. The population would continue to increase at the same rate, due to constant food supplies. B. The population would increase more rapidly, due to advances in technology. C. Eventually the population would stop increasing or would decrease, due to lack of food and living space. D. Eventually the population would decrease to zero, because of war, famine, or disease.arrow_forwardYou are watching a documentary on television about grizzly bears in North America. The narrator is speaking over a clip of two cubs and their mother walking along a riverbank in a heavily wooded forest. She says that grizzly bear populations are rising for the first time in several decades even though deforestation is still a growing problem in North America. Which of the following could be a possible factor for the increase in the grizzly population? Loss of habitat Reduction of resources Increased industrialization Higher birth rate over death ratearrow_forward
- A A Ao Question 45 The atmosphere is an important source of both carbon and oxygen in aquatic systems. Question 45 options: A) True B) False Question 46 Energy sources from within an aquatic system are known as allochthonous. Question 46 options: A) True B) False Question 47 Cooperative breeding is more likely to occur Question 47 options: A) when inbreeding has no effect. B) when successful dispersal is difficult. C) when most individuals are unrelated. D) when long-distance dispersal is possible.arrow_forwardWhy is the massacre of approximately 8,000 Muslim men and boys in Srebrenica (Bosnia) in July 1995 an example of the limitations of United Nations peacekeeping? A. The limited mandate and light weapons of the peacekeeping force were not sufficient to stop the Bosnian Serb army from overrunning the safe zone.B. United Nations peacekeepers could not effectively monitor elections to ensure their fairness.C. United Nations safe havens proved to be breeding grounds for transnational terrorist groups.D.The United Nations could not convince any countries to contribute troops to a peacekeeping mission in Srebrenica.arrow_forwardThere are six species of animals in an area at the end of Thunder Bay. The area is wooded land covering rolling hills with two small rivers. Most of the area is surrounded by farm land where people have sheep and cows. There are three roads in the area, one of which leads to an expanding subdivision. a) Chose the species you believe to be most likely to become endangered and the species you believe to be least likely to become endangered. Compare and contrast these two species to explain your decision b) Which two species do you think would be most likely to exhibit a competitive relationship? c) Explain two density-dependent factors that may affect population P in this area d) Explain two density-independent factors that may affect population P in this areaarrow_forward
- Understanding Health Insurance: A Guide to Billin...Health & NutritionISBN:9781337679480Author:GREENPublisher:CengageBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning