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Questions and Answers

the biotic potential of a population

  • occurs only under ideal conditions (correct)
  • occurs at the populations carrying capacity
  • increases as the population size increases
  • depends on the limiting resources of the population

which would be expected for a niche generalist?

  • many food sources (correct)
  • a narrow fundamental niche
  • limited adaptability to changing conditions
  • few suitable habitats

an r-selected species characteristically has

  • a type I survivorship curve
  • a fast population growth rate (correct)
  • few offspring
  • a population near carrying capacity

which is true of a population overshoot?

<p>it is followed by dieback (D)</p> Signup and view all the answers

which of the following is not common in K-selected species?

<p>little parental care (D)</p> Signup and view all the answers

which term best describes a population exhibiting its maximum growth in the absence of limitations and constraints by the environment?

<p>biotic potential (A)</p> Signup and view all the answers

which characteristics would be expected for a specialist species?

<p>limited food sources (D)</p> Signup and view all the answers

which of these describes k-selected species?

<p>the individuals are large with a slow growth rate (D)</p> Signup and view all the answers

which of the following characteristics best describes r-selected species?

<p>large number of offspring (A)</p> Signup and view all the answers

the J-shaped population curve is a classic representation of

<p>exponential growth (B)</p> Signup and view all the answers

which is true about a population's carrying capacity?

<p>it is determined by a limiting resource (A)</p> Signup and view all the answers

logistic growth models incorporate a time with almost unlimited growth and

<p>a time with growth that approaches the carrying capacity (C)</p> Signup and view all the answers

what is true of a population overshoot?

<p>it is followed by dieback (D)</p> Signup and view all the answers

what usually happens when a resource base decreases?

<p>population growth decreases (D)</p> Signup and view all the answers

which is an example of a density-independent factor?

<p>a hurricane (C)</p> Signup and view all the answers

which of these best describes logistic population growth?

<p>the population grows until a carrying capacities reached and then levels off (A)</p> Signup and view all the answers

which statement explains what occurs after a population overshoots the carrying capacity?

<p>the population undergoes a dieback without sufficient resources (B)</p> Signup and view all the answers

which of these describes what happens as a population nears its carrying capacity

<p>it exhibits a slower population growth (B)</p> Signup and view all the answers

which is an example of density-dependent factor?

<p>competition for nesting sights between two songbird species (D)</p> Signup and view all the answers

Thomas Malthus introduced

<p>the hypothesis that humans could exceed Earth's carrying capacity (B)</p> Signup and view all the answers

a country has a net immigration rate of 3 per 1,000, a CBR of 9 per 1,000, and a CDR of 11 per 1,000. wha is the growth rate of this country?

<p>0.1 percent (D)</p> Signup and view all the answers

replacement-level fertility in a developed country is roughly equal to

<p>2.1 (B)</p> Signup and view all the answers

an age-structure diagram that is a pyramid shape indicates a country that is

<p>growing rapidly (A)</p> Signup and view all the answers

which of these statements correctly describes the human population, as explained by Thomas Malthus?

<p>the human population population has a carrying capacity that will limit the number of humans Earth can sustain (D)</p> Signup and view all the answers

a country has a net in-migration rate of 5 per 1,000,a CBR of 8 per 1,000, and a CDR of 7 per 1,000. What is the growth rate of this country.

<p>0.6% (B)</p> Signup and view all the answers

which of these explains why the replacement level fertility is approximately 2.1 in a developed country?

<p>both parents are replaced, plus an additional 0.1 individuals to replace the low rate of infant mortality (D)</p> Signup and view all the answers

which shape of an age structure diagram indicates a country with a decreasing population size?

<p>an inverted pyramid with a wide top (D)</p> Signup and view all the answers

which of these factors would cause the total fertility rate of a country to decrease?

<p>increasing employment opportunities for women (A)</p> Signup and view all the answers

doubling time can be approximated mathematically by

<p>70/% growth rate (C)</p> Signup and view all the answers

according to the theory of demographic transition, countries move through growth stages in what order?

<p>slow growth, rapid growth, stable growth, declining growth (D)</p> Signup and view all the answers

which of the following likely reduces fertility rate the most?

<p>increased education of women (C)</p> Signup and view all the answers

the IPAT equation was developed to estimate

<p>the impact of human lifestyles on Earth (B)</p> Signup and view all the answers

approximately what percentage of the population of developed countries lives in urban areas?

<p>75 percent (A)</p> Signup and view all the answers

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