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A: Describe at least three to five other limiting factors (other than the number of predators or prey)…
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Mention three main reasons for the sharp rsie in human population in the world.
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- 3 oBook References Classify each of the following descriptions by its effect on human population growth rates. Low death rate compared to birth rate First phase of demographic transition A population close to its carrying capacity Low birth rate Outbreak of deadly infectious diseases High mortality rate Second phase of demographic transition Current conditions in India Low population growth High population growthWhat are the two key concepts for this section? Listthree variables that affect the growth and decline ofhuman populations. How can we calculate the population change of an area? Define the total fertilityrate (TFR). How has the global TFR changed since1955? Summarize the story of population growth inthe United States. List six changes in lifestyles thathave taken place in the United States during the 20thcentury, leading to a rise in per capita resource use.b) Figure 7 shows population growth of Proboscis monkeys over time. 2.0E carrying capacity V 1.5- Monkey populations 1.아- 0.5- Time Figure 7 i) State the type of population growth. ii) Proboscis monkeys nomally live in groups in their natural habitat. What is the dispersion pattern for this monkey population? iii) Describe what happens to Proboscis monkey population at V. 12 iv) Give one (1) possible example of density-dependent factor that affects the Proboscis monkey population.
- Are the following statements True or false? 1) Population growth of many species is expected to be either exponential or geometric, unless some factor such as competition or predation is introduced. 2) The age distribution of populations reflects the influence of per capita rates of births, death, immigration, and emigration.If the incidence rate of a very serious disease is 25/100,000 person-years and the prevalence of this disease in the population is 75/100,000, what is the average survival time of individuals who contract this disease? [Assume the population is in steady state] * Hint* Formula (D=P/IR)S2) Below are two tables showing the population size and deaths by age for one year in the states of Louisiana (LA) and Florida (FL). Use the data to answer the following questions. You may use the blank cells in the tables for calculations and to show answers Age group 0-15 16-70 71+ Louisiana Deaths 30 215 585 Florida Age group Deaths 0-15 16-70 71+ 25 400 725 Population 165,000 300,000 75,000 Population 90,000 435,000 225,000 a. Calculate the overall crude mortality rates for LA and FL expressed as per 100,000 population. LA: FL: b. Calculate the age-adjusted mortality rates using the combined population as the standard. c. Explain what accounts for this difference in crude rates and adjusted rates between LA and FL.
- Why the world statistics on population is not reliable?A population of 30 rabbits has been introduced into a new region. It is estimated that the maximum population the region can sustain is 400 rabbits. After 1 year, the population is estimated to be 90 rabbits. How many rabbits will there be after 3 years? In a city whose population is 100 000 an outbreak of flu occurs. When the city health department begins, its record keeping, there are 625 infected people. The number of infected people N is increasing at a rate proportional to the square root number of infected people at time t in weeks. One week later, there are 1600 infected people. Find the number of infected people two weeks after the record keeping begins.What is shown in the graph? A) B) D) 40,000 Population exponential decay of a population exponential growth of a population arithmetic progression of a population an inverse relation between time and population Time 10 hr
- 5 x P Parchment Exchange - Leader i earn.edgenuity.com/player/ nce - SC5181 A ņ X 1 2 3 4 5 Mark this and return G how would scientists describe th X How is point intercept used to determine the abundance of a population? OA sample of the population is counted by sight and then extrapolated into a value for the entire population. O A three-dimensional frame is placed next to the target species and is used to tally the number of individuals near it. OA predetermined scale is placed along a transect line and the percent cover of the desired species is measured. O A measured line is laid out in the study area and the number of target individuals underneath it are counted. O M Show is point intercept used to de x B + DELL Save and Exit Next Sign out English Submit Oct 27 K 2:2Natality, mortality, immigration, and emigration are all terms related to any population. a) Describe briefly what each term means. b) Explain briefly how each process effects a population. c) Which of the terms do not relate to a closed population? Explain why not. d) Brainstorm several examples of closed populations that occur naturally. Contrast these with examples of closed populations produced by human intervention or other activities.In the development of the exponential model of population growth, why can B and D be substituted by bN and dN, respectively? Explain.