The human population is no longer growing exponentially but is still increasing rapidly (pp. 1205-1209)
• Since about 1650, the global human population has grown exponentially, but within the last 50 years, the rate of growth has fallen by half. Differences in age structure show that while some nations' populations are growing rapidly, those of others are stable or declining in size. Infant mortality rates and life expectancy at birth vary widely in different countries.
• Ecological footprint is the aggregate land and water area needed to produce all the resources a person or group of people consume and to absorb all of their waste. It is one measure of how close we are to the
How do humans differ from other species in the ability to "clloose" a carrying capacity for their environment?
Want to see the full answer?
Check out a sample textbook solutionChapter 53 Solutions
Bio 121 Campbell Biology Truman College
- Describe the age structures in rapidly growing countries, slowly growing countries, and countries with zero population growth.arrow_forwardWhich of the following is not a way that humans have increased the carrying capacity of the environment? agriculture using large amounts of natural resources domestication of animals use of languagearrow_forwardHow do life expectancy and infant mortality affect the population size of a country?arrow_forward
- How is growth of population represented?arrow_forwardThe global human population has surpassed 7 billion, far exceeding our population’s size throughout our history on Earth. Name some specific means by which we have apparently raised Earth’s carrying capacity for our species. Do you think we can continue to raise our carrying capacity? How might we do so? What limiting factors exist for the human population today? Might Earth’s future carrying capacity for us decrease? Why or why not?arrow_forwardYour short answer should be 2-5 sentences depending on the question. (Ch. 53). Please answer both questions. 1) Describe the characteristics of populations that exhibit Type I, Type II, and Type III survivorship curves. 2) Compare the exponential model of population growth with the logistic model.arrow_forward
- The CDC released the following data in its 2013 Vital Statistics report. Age interval Number dying in age interval Number surviving at beginning of age interval 0-10 756 100,000 11-20 292 99,244 21-30 390 98,953 31-40 1,234 98,164 41-50 2,457 96,311 51-60 5,564 94,352 61-70 10,479 38,788 Table 45.3 Calculate the mortality rate for each age interval, and describe the trends in adult and childhood mortality per 100,000 births in the United States in 2013.arrow_forwardIdentify the demographic transition stage for a country that has an age structure consisting of a large number of people in the pre-reproductive age group due to continuous births , but also has a small amount of people in the elderly population due to death rates falling. a) Stage 1 b) Stage 2 c) Stage 3 d) Stage 4arrow_forwardWhich of the following questions is most appropriate to an investigation at the population level? 8888 What is the relationship between resource availability and birthrate? What is the effect of diminished resources on an individual's life span? How long does it take for carbon to be cycled from the atmosphere into living tissue? What factors influence the distribution of tropical forests?arrow_forward
- Carrying capacity for humans on Earth is related to check all that apply): Group of answer choices amount of nesources on the planet population access to clean water incoming solar radiation average size of human food yields.arrow_forwardImprovements in nutrition and health care typically increase life expectancies and decreas mortality rates but don't increase the rate of population growth. T or F?arrow_forwardWhich country looks like it is experiencing exponential growth? Which country looks like it has reached its carrying capacity? Because it has reached its carrying capacity, describe the relationship between its birth rates and death rates. Describe what is happening to Europe’s population size in terms of birth rates and death. Which country or countries could be experiencing: Emigration (Explain) Immigration (Explain)arrow_forward
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College