Exam 18: Human Population Growth

A) Elderly
B) Male children
C) Young adult men
D) Young adult women
E) Female children

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A) At low doses, it is an effective spermicide.
B) If levels are decreased in men, they lose some masculinity but also some fertility.
C) Too much testosterone makes men uninterested in sex.
D) Too much testosterone actually reduces sperm production, so it could be used to reduce male fertility.
E) Reducing testosterone levels reduces sperm production.

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A) No. The U.S. oil consumption is already going down, so we're learning to conserve and use other sources for energy. We'll have enough oil.
B) No. Science will certainly come up with a better energy source than oil any year now.
C) There's really no way to know, but better safe than sorry.
D) Yes, because even though U.S. oil consumption is down, as other countries develop like we already have, their consumption goes up. We're going to need some other energy source.
E) Yes, because the United States needs an ever increasing supply of oil, not just for energy but for many of our products. We may have to plan to guard what we have and fight for what's in other countries.

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A) 11:15
B) 11:30
C) 11:45
D) 11:50
E) 11:55

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A) Keep the population growing
B) Stop population growth right now
C) Take steps to get us to a logistic growth phase before we run out of resources
D) Sterilize everyone
E) Limit children worldwide to one child per couple as soon as possible

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A) Wide at the bottom and narrowing sharply toward the top
B) A somewhat wider bulge at the top than at the bottom, reflecting the aging boomers and their "boomlet" of children
C) Reasonably vertical sides, equal in both directions, as the population growth slows since then
D) A bulge in the middle and towards the bottom, reflecting the aging boomers and their "boomlet" of children
E) A bulge at the top, and a bulge at the bottom, reflecting the aging boomers and their "boomlet" of children

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A) Population growth and resource use
B) Population trends over time
C) How population growth affects various factors on Earth and how those factors affect population growth
D) Bacterial meningitis affects on populations
E) Sustainable living practices

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A) Yes, the population is much smaller than it otherwise would have been and is projected to peak in 2030 and then decline.
B) Yes, the population growth rate has stabilized and is now at equilibrium.
C) No, the population was so big to start with it's still growing exponentially out of control.
D) No. In fact people were so angered by it that they probably produced more children than they otherwise would have.
E) It's too soon to tell.

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A) Economics-buy low and sell high
B) Helping a developing country is an ethical obligation
C) Helping them develop will slow global population growth for the good of us all
D) It wouldn't. We developed ourselves. They can, too.
E) It wouldn't. It would be better to invest in slowing our own population growth so our country doesn't run out of resources.

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A) Crowding, war, lack of resources like food, sanitation, or medicine, disease
B) Few people to start with
C) High infant mortality
D) Short life spans
E) There's no way to tell

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A) Limiting factors
B) Social factors
C) Uncontrollable factors
D) Density-dependent factors
E) Overcapacity factors

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A) Every year
B) Every 5 years
C) Every 10 years
D) Every 50 years
E) Every 100 years

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A) How many people are on Earth already
B) How high our growth rate is now and whether and how that changes
C) What our fertility rate is now and whether and how that changes
D) Resources, technological developments, and what quality of life people demand
E) There's no way to predict it because conditions on Earth constantly change.

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A) High birth and death rates, so limited growth with the population close to carrying capacity
B) High birth rates and low death rates, so the population is growing rapidly toward carrying capacity
C) High birth rates but lower death rates as sanitation, technology, and medicine advances; exponential growth rate
D) Low birth rates and low death rates as sanitation, technology, and medicine advances; slowing growth rate and population near carrying capacity
E) Low birth and death rates, women's status improves, population growth levels off and stops

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A) At some point, there are not enough resources and reproductive success declines.
B) Organisms experience more stress in crowded conditions.
C) Disease spreads more easily.
D) Waste products and pollutants accumulate.
E) All of the above

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A) Parents may not live long enough to provide security or they may want one less child at home to feed.
B) Girls are perceived to be less helpful workers around the farm or house.
C) Girls typically mature much earlier than boys.
D) Girls are perceived as more likely to just obey their parents.
E) Girls are perceived as less able to care for themselves.

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