Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Textbook Question
Chapter 23, Problem 3TY
A population is growing at a rate of 2% per year. How many years will it take for this population to double in size?
a. 16 years
b. 20 years
c. 72 years
d. 36 years
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Chapter 23 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 23 - Do you think extending nations' ocean territorial...Ch. 23 - Are there any marine protected areas (MPAs) or...Ch. 23 - What are the components of an ecosystem?Ch. 23 - Prob. 2CRCh. 23 - Describe what happens to a country as it undergoes...Ch. 23 - Define zero population growth and explain why it...Ch. 23 - Prob. 5CRCh. 23 - Prob. 6CRCh. 23 - Prob. 7CRCh. 23 - Explain why the water cycle is essential to all...
Ch. 23 - Discuss the importance of the carbon cycle.Ch. 23 - Discuss the phosphorus cycle and its importance.Ch. 23 -
1. Your college campus, including all the humans...Ch. 23 -
2. Which of the following will affect the biotic...Ch. 23 - A population is growing at a rate of 2% per year....Ch. 23 - The large intestine of humans is populated by a...Ch. 23 -
5. Which of the following characterizes mature...Ch. 23 -
6. _____ flow(s) one-way through ecosystems while...Ch. 23 - All of the following terms can appropriately...Ch. 23 -
8. A human maintaining a vegan diet (containing...Ch. 23 - All of the following processes are involved in the...Ch. 23 - Prob. 10TYCh. 23 - Prob. 11TYCh. 23 -
12. Which biogeochemical cycle does not include...Ch. 23 - Prob. 13TYCh. 23 - Which of the following statements is false? a. The...Ch. 23 - Which statement about the human fertility rate is...Ch. 23 - Given absolutely no environmental resistance, how...Ch. 23 - Prob. 2AWKCh. 23 - Prob. 3AWKCh. 23 - Prob. 4AWKCh. 23 - Prob. 5AWKCh. 23 - Prob. 6AWKCh. 23 - Least developed countries tend to be poorer than...
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- Human populations have which type of survivorship curve? a. Type I b. Type II c. Type III d. Type IVarrow_forwardPopulation growth that is dependent on the number of individuals A. Arithmetic Growth B. Carrying Capacity C. Intrinsic Rate of Growth D. Exponential Growtharrow_forwardHumans have which type of survivorship curve? a. Type I b. Type II c. Type III d. Type IVarrow_forward
- In what year did Zika start showing more severe signs in the population? A. 2005 B. 1950 C. 2020 D. 2015arrow_forwardWhich statement about population growth is true? A. Population growth models do not apply to humans. B. Population growth can be exponential for only as long as environmental conditions are favorable. C. Population growth can continue indefinitely. D. Population growth of field samples always has a λ of approximately 1.arrow_forwardWhat has caused the population illustrated below to slow down? a consumption of resources b high death rates c low reproductive rates d increased availability of resourcesarrow_forward
- This is the combination of the likelihood of occurrence of harm and the severity of that harm where the source of harm is a biological agents or toxin? A. Biosafety B. Biorisk C. Biosecurity D. Biorisk Managementarrow_forwardHow does the logistic growth model of population growth differ from the exponential growth model? A. The graph of the exponential model is S-shaped. B. The logistic growth model shows an unrestricted growth rate. C. The logistic growth model considers the environment's carrying capacity. D. The exponential growth model shows a restricted growth rate.arrow_forwardBased on the chart what level of development would you expect the country to have? A. Developing B. Late-stage early industrialized C. Industrialized D. Developedarrow_forward
- The population rose sharply around 1800. What impact did this have on resource use? A More natural resources were used for fuel, food, and shelter for humans. B More natural resources were conserved and kept in their ecosystems. C There was no significant impact on resource use due to an increase in population.arrow_forwardThe change in population size for Canada in 2015 was an increase of 272 990. In the same year, the number of births was 392 902, the number of deaths was 269 012, and the immigration number was 271 660.What was the number of people who emigrated from Canada in 2015? Select one: a. 147 770 b. 122 560 c. 217 264 d. 125 220arrow_forward45. Calculate the approximate doubling time for a population growing at 1.0% per year. A. about 70 years B. about 35 years C. about 14 years D. about 5 years E. about 1 yeararrow_forward
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