BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 54, Problem 12IQ
Summary Introduction
To determine: The country with a larger overall ecological footprint: India or the United States.
Introduction: The ecological footprint is the total amount of productive land, which is required by an individual to support life. The
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a) how would an increase in the number of producers affect the number and size of trophic levels in an ecosystem?
b) how would an increase in the availability of a resource that was limiting the herbivore population size affect the number and size of trophic levels in an ecosystem?
How does the ecological impact from a diet consisting strictly of animal products (e.g., dairy products, eggs, and meat) compare with that of a strictly vegetarian diet? How many additional ecologically equivalent Calories do you consume each day by including as little as 10% of your Calories from animal sources?
Two alien species compete for resources on a planet far far away. Their initial populations are 100 and 1000 and
their specific growth rate is 0.02263/year and 0.02/year and their yield coefficient is 0.95 and 0.85 respectively.
When the first species begins to consume more than 50% of the resources the other population will be
inevitably be annihilated. How many years does it take for this to occur?
Answer:
Chapter 54 Solutions
BIOLOGY
Ch. 54.1 - Prob. 1LOCh. 54.1 - Prob. 2LOCh. 54.1 - Explain how species adapt to environmental...Ch. 54.2 - Prob. 1LOCh. 54.2 - Prob. 2LOCh. 54.3 - Prob. 1LOCh. 54.3 - Prob. 2LOCh. 54.3 - Prob. 3LOCh. 54.4 - Prob. 1LOCh. 54.4 - Prob. 2LO
Ch. 54.5 - Prob. 1LOCh. 54.5 - Discuss why populations cannot grow exponentially...Ch. 54.5 - Define carrying capacity and explain what might...Ch. 54.6 - Prob. 1LOCh. 54.6 - Prob. 2LOCh. 54.6 - Prob. 3LOCh. 54.7 - Prob. 1LOCh. 54.7 - Prob. 2LOCh. 54.7 - Prob. 3LOCh. 54 - Prob. 1DACh. 54 - Prob. 2DACh. 54 - Prob. 3DACh. 54 - Prob. 4DACh. 54 - Prob. 5DACh. 54 - Prob. 6DACh. 54 - Prob. 1IQCh. 54 - Prob. 2IQCh. 54 - Prob. 3IQCh. 54 - Prob. 4IQCh. 54 - Prob. 5IQCh. 54 - Prob. 6IQCh. 54 - Prob. 7IQCh. 54 - Prob. 8IQCh. 54 - Suppose experimenters artificially kept the hare...Ch. 54 - Prob. 10IQCh. 54 - Prob. 11IQCh. 54 - Prob. 12IQCh. 54 - Source-sink metapopulations are distinct from...Ch. 54 - The potential for social interactions among...Ch. 54 - When ecologists talk about the cost of...Ch. 54 - Prob. 4UCh. 54 - The difference between exponential and logistic...Ch. 54 - Prob. 6UCh. 54 - Which of the following is an example of a...Ch. 54 - If the size of a population is reduced due to a...Ch. 54 - In populations subjected to high levels of...Ch. 54 - In a population in which individuals are uniformly...Ch. 54 - Prob. 4ACh. 54 - Refer to figure 55.8. What are the implications...Ch. 54 - Prob. 2SCh. 54 - Refer to figure 55.14. Because the number of...Ch. 54 - Refer to figure 55.26. Would increasing the mean...
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- Which limiting factor would affect the carrying capacity for all species in the pictured ecosystem? a) Number of trees for giraffes b) Hunting behavior of lions c) Birth rate of the giraffes d) Amount of grasslandarrow_forwardWhat is an “ecological footprint”?arrow_forwardA human population of 10,000 individuals has a birth rate of 90 per every 1000 persons and a death rate of 16 per every 1000 individuals. Calculate the yearly increase of the population growth. a) 740 individuals/year b) 74 individuals/year c) 10,074 individuals/year d) 11,074 individuals/yeararrow_forward
- In what way can an ecosystem harm the human population?arrow_forwardWhich one of the following sentences is NOT true? Select one: Compared with other land-based food production systems, fisheries and aquaculture have a relatively small overall carbon footprint. Global fish production from capture and culture operations contributed up to 1.5% to the world’s CO2 emissions. CO2 emissions by marine and inland fishing vessels were about 0.5% of the total global emissions. Being a minor contributor in global terms, fisheries and aquaculture have no opportunities to mitigate emissions of greenhouse gases.arrow_forwarda) Determine whether the following factors are density-dependent or density-independent. Drought Answer Disease Answer Temperature Answer Low pH Answer Prey population number Answer Predator population number Answer Competition Answer Loss of habitat Answer b) The moose population in Jasper is currently on the decline in Jasper National Park. Some of the reasons for the population decline are liver fluke parasitic disease, return of the wolves in the area, and increased traffic in the highways. Match the cause of moose population decline to the type of limiting factor using the drop down menu. Choose between density dependent and density independent. Cause of Population Decline Limiting Factor a. Liver fluke Answer b. Increase in wolf population Answer c. Increase in highway traffic Answer c) Which of the following scenarios is an example of a density-dependent limiting factor? a. The spread of ticks among a moose population weakens the individual…arrow_forward
- How does the Living Planet Index (LPI) help a nation to assess its ecological footprint and sustain its population? (can you please be detailed)arrow_forward1.) At approximately what year did the human population enter an exponential growth phase? 2.) Prior to that time, what was the approximate carrying capacity of Earth? 3.) State three significant technological developments that have acted to increase the carrying capacity of Earth’s environment since that time. 4.) Provide two examples of density-dependent factors that are contributing to or have the potential to contribute to environmental resistance in human populations.arrow_forwardin 2021, the growth rate of the human population was 1.03% per year with a thencurrent population of 7.875 billion people. Assuming a carrying capacity of 15 billionindividuals,when will the population reach 14.5 billion (i.e., nearly carrying capacity)?arrow_forward
- What are the economic, environmental and/or biological implications of the following scenarios? Give specific examples. a. Loss of biodiversityarrow_forwardBelow is the output of several different models that Caterpillar has built to predic next quarter sales. Model A (3): Weather, recent quarter sales, housing starts Model B (3): Interest rates, worldwide GDP, housing starts Model C (3): Weather, worldwide GDP, housing starts Which model is the optimal combination of explanatory variables a) A b) B (c) C Caterpillar predicting Next Quarter Sales d) D R² R² adj 0.56 0.69 0.59 0.58 0.58 0.57arrow_forwardDuring what phase of the growth curves in each diagram is the population just beginning to colonize an area? (C) a) Which type of population growth appears to continue unchecked? b) The growth curves in the Model are often referred to using the letters of the alphabet they resemble. The logistic growth curve is sometimes referred to as an S-curve. What letter would you use to describe the exponential growth curve? c) What causes the population to slow down during logistic growth? d) The maximum population an environment can sustain is affected by environmental factors that cause the population to level out or become stable. What term is used to describe this level of logistic growth? Diagram A-Exponential Growth Curve Population Numbers Exponential growth Lag phase Time Population Numbers Diagram B-Logistic Growth Curve Lag phase Time Carrying capacity (K) Pressure begins due to environmental resistancearrow_forward
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