Question 60 (Mandatory) What would be the growth rate of an island population of 1,000 that has 30 births per 100 population, 20 death per 100 population, 5 immigrants per 100 population, and 10 emigrants per 100 population? (you can write on your exam) a) 50 b) -5 c) +5 d) + 100 e) +50
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- Speculate upon the calculation shown in the table and Graph; Briefly explain: a)Do the cohort survivorship curves from each decade different from one another? If so, what might have caused the differences? b)Were the population growing while the cohort was extant? c)How would the data have been altered if Woodland Cemetery had stopped excepting interments in 1950 rather than being open to the present day? d) One problem with studying survivorship curves is that a birth cohort must be followed through until the death of the last individual. How would the shape of a 1960's cohort survivorship curve be altered from those of the 1800's?The following is an example of what kind of study? Participants are recruited based on exposure status as ascertained through historical records (medical records or other records from the past), disease status is determined after recruitment, and risk of disease among the exposed is then compared with risk in the unexposed. a) Ecological study b) cross-sectional study c) case control study d) cohort study e) randomized control trial1)Questions related to population dynamics look at which aspect of a population? a)The factors that determine the maximum population size that can be supported in an environment b)How diseases are transmitted through a population c)How the genetics of a population change over time d)How & why population size changes over time e)How the number of species in an environment changes over time
- A population with three life-stages separated by 3 years is modelled by a Leslie matrix, resulting in these predictions. The x-axis shows the number of time steps in the vector dynamics from the Leslie matrix multiplication. How many years before the long-term dynamics take over? a) 0 b) 2 c) 5 d) 15 What is the long term prediction for this population? a) decreases to zero b) anything could happen c) increases to infinity d) stable If the population started with many more animals and in different proportions from each life stage, would the prediction be the same or different? If the population started with many more animals and in different proportions from each life stage, in the long term dynamics what would be the ratio of newborns (stage 1) to youths (stage 2) to adults (stage 3). a) about 1 to 1 to 1 b) about 4 to 2 to 1 c) about 6 to 3 to 1 d) no way to judgeCan someone please help me with multiple choice question, please choose the best that fits, Thank you 1)In which of the following situation would you expect to find the largest number of K-selected individuals? A) temporary pools that form afer rain showers but dry up within 2-4 weeks B) sand dunes that shift continually with the wind C) a prairie(grassland) ecosystem right after a fire D)a temperature stable lake that has existed in the same location for many generationsThe data below represent a cohort of organism “X”, tracked from birth to death. Time period* Number alive at start of period Proportion surviving at start of time interval Deaths during period Rate of mortality during time period "0-1" 432 1.00 390 0.90 "1-2" 42 0.10 29 0.69 "2-3" 13 "3-4" 11 "4-5" 10 "5-6" 9 "6-7" 7 "7-8" 3 "8-9" 0 * Numbers are reported over eight equal sized time periods – these could represent days, weeks, months or years. a) Complete the table by recording survivorship (proportion alive at the start of the time period), the number of deaths and the mortality rate for each time period. For each column you need to ensure you indicate how you performed your calculation (e.g. show one example calculation or provide a formula). b) Plot a survivorship curve for species X using semi-log graph paper. A template sheet has been uploaded to the Problem Set 2 folder. Remember…
- The data below represent a cohort of organism “X”, tracked from birth to death. Time period* Number alive at start of period Proportion surviving at start of time interval Deaths during period Rate of mortality during time period "0-1" 432 1.00 390 0.90 "1-2" 42 0.10 29 0.69 "2-3" 13 "3-4" 11 "4-5" 10 "5-6" 9 "6-7" 7 "7-8" 3 "8-9" 0 * Numbers are reported over eight equal sized time periods – these could represent days, weeks, months or years. 1.Complete the table by recording survivorship (proportion alive at the start of the time period), the number of deaths and the mortality rate for each time period. For each column you need to ensure you indicate how you performed your calculation (e.g. show one example calculation or provide a formula). 2.Plot a survivorship curve for species X using semi-log graph paper.Remember that survivorship is, by convention, plotted as a proportion of…Enumerate five (5) reasons why you think the number confirmed COVID-19 cases is continuously increasing. Give one (1) significant reccommendations to resolve each reasons.Can someone please help me with 2 multiple choice question, please choose the best that fits, Thank you 1)In which of the following situation would you expect to find the largest number of K-selected individuals? A) temporary pools that form afer rain showers but dry up within 2-4 weeks B) sand dunes that shift continually with the wind C) a prairie(grassland) ecosystem right after a fire D)a temperature stable lake that has existed in the same location for many generations 2)The greastes effect that hmans have on the carbon cycle derives from A) the production of methane from domestic cattle B) all of these C) the production of CFCs D) runoff of fertilizers from agriclture E) the burning of fossil fuels
- 3 / 14 | - 63% + Assessment criteria 1.1.1.2 1.3 2.1 2.2 The Covid pandemic had an immediate impact on people's mental health, the data shows that people seeking help for mental health problems is at a record high, and mental health services are overstretched and under resourced. Write an essay with the title: 'Discuss the impact of the Covid pandemic on mental health. Select one group to base your essay on: Children Adolescents Adults Older People In your essay: Identify common mental health disorders associated with the pandemic that affect the group you have selected. Describe how mental health disorders are classified. Discuss the impact of mental health problems for the group you have selected. This means to discuss how mental health problems can affect people physically, socially and emotionally. Consider key issues and challenges affecting mental health during and since the pandemic. Identify and analyse the legislation and guidance that can be used to support people with mental…Natality, 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.Need help with 1 and 2 questions: 1. Which of the following statements about the stationary phase is correct? A.) The birth rate equals the emigration rate. B.) The death rate equals the immigration rate C.) The birth rate equals the death rate D.) The emigration rate equals the immigration rate 2.) Life strategies of various populations can be represented by the symbols and K. Which of the following is not a characteristic of an r-selected population? A.) Its growth rate is unpredictable B.) The organisms have a short life span C.) It rarely exceeds the carrying capacity of its environment D.) The death rate of the population is very high