According to the graph shown here, the carrying capacity for fruit flies in the environment of the culture bottle is .a. 0 flies;b. 100 flies;c. 150 flies;d. between 100 and 150 flies;e. impossible to determine

Why is there a trade-off between survivorship and fecundity?

Based on current growth rates, Earth's human population in 2019 will be closest toa. 2.5 million.b. 4.5 billion.c. 7.5 billion.d. 10.5 billion.

The term (K−N)/Ka. is the carrying capacity for a population.b. is greatest when K is very large.c. is zero when population size equals carrying capacity.d. increases in value as N approaches K.

Which of the following species is most likely to have a Type III survivorship curve?a. humans, Homo sapiensb. common lizards, Zootoca viviparac. thale cress plants, Arabidopsis thalianad. lynx cats, Lynx canadensis

The observation that members of a population are uniformly distributed suggests thata. resources are distributed unevenly.b. the members of the population are competing for access to a resource.c.the members of the population are neither attracted to nor repelled by one another.d. the density of the population is low.

With regard to its rate of growth, a population that is growing logisticallya. grows fastest when density is lowest.b. has a high intrinsic rate of increase.c. grows fastest at an intermediate population density.d. grows fastest as it approaches carrying capacity.

Pose a hypothesis to explain why the human population has undergone especially rapid growth over the past 200 years. Describe two examples of density-dependent factors that limit human population growth. Is it possible that humans have surpassed Earth's carrying capacity?

All of the following are density-dependent factors that can influence population size except .a. weather;b. food supply;c. waste concentration in the environment;d. infectious disease;e. supply of suitable habitat for survival