The current carrying capacity of Earth for the human population may have been inflated by .a. demographic momentum;b. the tendency for women to want to control family size;c. an artificially low number of density-independent factors;d. our use of fossil fuels;e. recent population crashes

Populations that rely on stored resources are likely to overshoot the carrying capacity of the environment and consequently experience a(n) .a. demographic momentum;b. cultural carrying capacity;c. decrease in death rates;d. population crash;e. exponential growth

During exponential growth, a population alwaysa. has a constant per capita population growth rate.b. quickly reaches its carrying capacity.c. cycles through time.d. loses some individuals to emigration.

Skyrocketing growth of the human population appears to be mainly a result ofa. a drop in death rate due to sanitation and health care.b. better nutrition boosting the birth rate.c. the concentration of humans in cities.d. social changes that make it desirable to have more children.

Indicate what is correct and incorrect about this statement: If lizards want to survive during climate change, they can evolve new life-history traits.

Which of the following statements about human populations in industrialized countries is correct?(A)Birth rates and death rates are high.(B)Average family size is relatively large.(C)The population has undergone the demographic transition.(D)The survivorship curve is Type II.

Which of the following statements about human populations in industrialized countries is incorrect?a. Birth rates and death rates are high.b. Average family size is relatively small.c. The population has undergone the demographic transition.d. The survivorship curve is Type I.

According to data on ecological footprints,a. the carrying capacity of the world is 10 billion.b. Earth's resources are sufficient to sustain future generations at current levels of consumption.c. the ecological footprint of individuals in the United States is more than twice the world average.d. nations with the largest ecological footprints have the fastest population growth rates.

When wild plant and animal populations are logged, fished, or hunted, only the oldest or largest individuals tend to be taken. Many of the commercially important species are long lived and are slow to begin reproducing. If harvesting is not regulated carefully and exploitation is intense, what impact does harvesting have on a population's age structure? How might harvesting affect the population's life table and growth rate?