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- Suppose 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. 2,0001) How did the removal of sea otters affect the population of two other organisms? Please explain. (grey means they are no longer available in that ecosystem).8 Analyze if the following pairs of statements are correct. Choose: A, if both statements are correct; B, if only the first statement is correct; C, if only the second statement is correct; or D, if both statements are incorrect. 2a. Population density refers to the number of individuals within a designated area. 2b. Richness pertains to the number of species present in a specific location.
- 2. If the food source is affecting the buffalo population, what do you predict the graph of the food source would look like? Either draw a graph or write a prediction.5)How does the number of different prey species available to an organism affect the number of offspring it can produce in a breeding season? a)Population b)Community c)EcosystemFigure 45.10b If the major food source of the seals declines due to pollution or overfishing, which of the following would likely occur? The carrying capacity of seals would decrease, as would the seal population. The carrying capacity of seals would decrease, but the seal population would remain the same. The number of seal deaths would increase but the number of births would also increase, so the population size would remain the same. The carrying capacity of seals would remain the same, but the population of seals would decrease.
- 9) If the population of hawks in this area increases, their prey populations might decrease. Later, with fewer prey, the hawk population might decrease. The prey populations might then increase. This is an example of1. What happens to the prey species when the predator species population increases? Why? Please answer.1. Discuss some limitations of the mark and recapture method. 2. Discuss reasons why population numbers would be important and how this data could be used to manage wildlife populations.
- 1. Develop a sampling method/design to measure the sample size species richness of the invertebrates of 6 kilometers coastline. Use the Slovin's Formula to find the sample size.2)Which of the following best describes the difference between population size and population density? a)Population size measures the abundance of an organism, whereas population density measures the distribution b)Both variables measure abundance, but population density takes the into account the size of individuals, not just the number of individuals in the population c)Population size measures abundance, but population density measures how rapidly the size changes d)Population density measures the abundance of an organism, whereas population size measures the distribution e)None of these descriptions are correct4 Use the drop-down menus to complete the statements about the birds. The changed environment selected For Against the birds with smaller beaks. The population of birds with smaller beaks increased decreased because of an increase decrease in competition over small seeds.