Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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What insights can we gain about population dynamics when we examine fluctuations in age structure?
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- In general, populations with abundance have geographic range. small / large large / small large / large small / smallarrow_forwardtell whether the curves for the different cohorts are different from one another.If so, what might have caused the differences? In addition, did you notice any difference in the curves for males and females? If so, what might havecaused the differences?Speculate about the future if: 1) health care costs continues to increase, and 2) medical advances continueand most diseases and infant mortality are eliminated.How can this method be used to understand or manage natural populations?arrow_forwardIn your own words, define cultural adaption.arrow_forward
- What are the two ways that a population size can decrease? births and immigration deaths and emigration births and emigration deaths and immigrationarrow_forwardGenerational cohorts consist of people born within a few years of one another and who experience somewhat similar life events during their formative years. True O Falsearrow_forwardDescribe some general insights that you can glean about population growth simply by looking at the age class distribution.arrow_forward
- In a population of solitary and independent birds, birds occasionally will build nests close to each other. Females will provision their young with food, but may not have enough for themselves. The bird may try to obtain additional food from their neighbors by visiting their nest. Occasionally the neighbor may share some of its food with the visiting bird. What is necessary for this altruistic behavior to persist in this population and why?arrow_forwardContrast density-dependent versus density-independent population processes.arrow_forwardAccording to Grimes model, which characteristics (life history traits) apply to individuals in the "Competitive" strategy? Question 10 options: The offspring have a high survival rate All of these They produce relatively few offspring They are very mobile They invest very little in their offspring They have an older age of maturityarrow_forward
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