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Ch. 51 - Population Ecology
All textbooksFreeman 8th EditionCh. 51 - Population EcologyProblem 8
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Chapter 50, Problem 8

Indicate what is correct and incorrect about this statement: If lizards want to survive during climate change, they can evolve new life-history traits.

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Hello everyone and welcome to today's video. So the live history traits of organisms have evolved due to which of the following process is what I want you to recall from previous videos what this term life history traits means. Well, these are going to be traits that affect an organism's survival and ability to reproduce because they affect the organism's survival and ability to reproduce. We can say that they affect the fitness of organisms and we already established that their traits. Now when the fitness of an organism depends on these fanatic traits and this is the way that organisms differentiate from each other. The process that is going to allow these traits to evolve is going to be natural selection. Because of this, the correct answer choice is going to be answer choice B natural selection. And this is mostly because the survival and the ability to reproduce of an organism is going to depend in these final pacific traits. That is the end of the video. And I really hope this helped you.
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Textbook Question

Which of the following species is most likely to have a Type III survivorship curve? a. humans, Homo sapiens b. common lizards, Zootoca vivipara c. thale cress plants, Arabidopsis thaliana d. lynx cats, Lynx canadensis

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When wild plant and animal populations are logged, fished, or hunted, only the oldest or largest individuals tend to be taken. Many of the commercially important species are long lived and are slow to begin reproducing. If harvesting is not regulated carefully and exploitation is intense, what impact does harvesting have on a population's age structure? How might harvesting affect the population's life table and growth rate?

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Open Question

Predict the possible consequences of global warming to the net reproductive rate of sea turtles given that the sex ratio of many sea turtles and other reptiles is determined by the temperature of the eggs in the nest; typically, warmer eggs become female and cooler eggs become male.

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Textbook Question

Burmese pythons (Python molurus bivittatus) are constricting snakes that can reach enormous sizes (up to 7 meters in length). They are native to Southeast Asia but were released into southern Florida from the pet trade. Many other snakes occur naturally in this area. Are the introduced pythons a problem? Burmese pythons were first found in the wetlands of Everglades National Park in the 1980s, but only rarely. The accompanying graph shows what happened next. Most of the data are derived from chance encounters of pythons on roads and intermittent search effort near roads (pythons are notoriously difficult to find). Despite the variability in search effort, what type of population growth best describes the trend in the data from 2000 to 2020? a. logistic b. exponential c. linear d. logarithmic


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