BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 40, Problem 3SA
Suppose 200 fish are marked and released in a pond. The following week, 200 fish are caught and 100 of them have marks. How many fish are in this pond?
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Chapter 40 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 40 - Most commonly, individuals of a natural population...Ch. 40 - The rate at which population size grows or...Ch. 40 - Suppose 200 fish are marked and released in a...Ch. 40 - Prob. 4SACh. 40 - For a given species, the maximum rate of increase...Ch. 40 - _______ is a density-independent factor that...Ch. 40 - Prob. 7SACh. 40 - Prob. 8SACh. 40 - Compared to the less developed countries, the...Ch. 40 - An increase in infant mortality will _______ a...
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- More effective fishing methods represent a technological solution to the problem of obtaining food for humans. Predict how this could have both potential benefits and drawbacks such as risks or unintended consequences to aquatic ecosystems.arrow_forwardIn 1-2 sentences for each ecological change and in your own words, explain any two of the four ways the resulting ecological changes have affected salmon populations.arrow_forwardDescribe how brine pools function.arrow_forward
- Determine whether these groups of animals are exhibiting the dilution effect. The brown bears that inhabit the Kodiak islands of Alaska eat a wide variety of foods, including berries, leaves, and insects. One of their main food sources, though, is the salmon that swims upstream to spawn in the fall. Great numbers of bears gather in and ; around the streams to hunt the large schools of traveling salmon. There are so many fish moving upstream in the fall that the bears cannot catch them all. 1)Kodiak bears gathering at streams for the salmon run 2)Salmon moving upstream in large schoolsarrow_forwardWhen looking at fish populations the number of eggs produced at spawning is known as: Group of answer choices Recruitment Fishery production Spawn-o-rama Osmoregulation Carrying Capacityarrow_forwardRead the excerpt below and highlight the answers to the questions. 1. What is carrying capacity? 2. How do limiting factors affect carrying capacity? Carrying Capacity If a population is small and resources are plentiful, a population may grow quickly. But over time, because of limiting factors, population growth tends to slow and then stop. The population has reached the "carrying capacity" of the ecosystem. Female cottontail rabbits (Sylvilagus floridanus) are especially fertile, able to give birth to seven litters a year. While this would suggest areas with cottontail rabbits would be overrun by them, this isn't the case. Rabbit populations are restricted by factors like food availability and predation. Due to these limiting factors the rabbit population will only get so big and that is it's carrying capacity. Carrying capacity can fluctuate depending on the limiting factors. If there is more predation or little food, then the carrying capacity will be lower. If there is little…arrow_forward
- The logistic model incorporates carrying capacity to make the model exponentialarrow_forwardWhat factors might be preventing the sea otter population from increasing to its historical levels. (Simple sentence)arrow_forwardSuppose 200 fish are marked and released in a pond. The following week, 200 fish are caught and 100 of them have marks. There are about ______ fish in this pond. a. 200 b. 300 c. 400 d. 2,000arrow_forward
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