Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 54, Problem 7IQ
Summary Introduction
To determine: The reason for density-dependent factor affectingbirth rate.
Introduction: When the
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Tuskless Females
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QUESTION 7
The civil war in Mozambique ended in 1992. Based on the data above, predict whether the percentage of tuskless females born after the civil war was:
A. more or less than the percentage of tuskless females that were civil war survivors (bar on the right)
B. more or less than the percentage of tuskless females in populations with less poaching (bar on the left)
Explain your reasoning.
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Less Poaching
Heavy Poaching
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All Ages
Civil War Survivors
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A) More than percentage of tuskless females that were civil war survivors because they endured a higher level of 50% poaching
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Question 3
Females are usually the limiting sexual resource in populations.
A) True
B) False
Question 10 options:
is intraspecific variation due to environmental differences
during development as opposed to genetic differences. (2 words)
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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- Explain the trade-off between number of offspring and amount of parental investment per offspring. The trade-offs of parenting Parental investment expenditure of time and energy on one offspring Pros: parental investment may inorease the chances of an offspring to sunvive and reproduce w net l e Cons parental in vestmentreduces the parent's abilityb generate additional offspring Parental investmentis a limitedresource Why do males and females have different reproductive strategies? Why do males in many species employ a number-of-offspring strategy while females employ the parental investment strategy? Females are more likely to gain from parental investment: Evolution of sexual reproduction 1. The of tspring they care for have 100% c carrying their genes Divergent selection that favored two alternative reproductive strategies % chance of 2. Their gain from multiple mates is limitedbetter to nvest in parenting than in mating 1. Numberof-ofthoring sategy Individuab whose gametes are good…arrow_forwardWhat factors affect birth rates and death rates worldwide?arrow_forwardPlease solvearrow_forward
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