John was recently sentenced for 10 years in prison for possession of crack cocaine. his lawyer discovered that others have served less time for the possession of powder cocaine, a drug often associated with a different category of people. john's lawyer has concluded that this discrepant sentencing is the result of

Areal estate salesperson is often approached by home buyers of a particular race. his usual practice is to show them homes in neighborhoods where most of the residents are the same race as the buyers. he avoids showing these buyers properties in integrated areas. this is called:

The graph shows a student’s data from an investigation about plant growth in five plants of the same type.

Apopulation is a group of individuals of a single species existing together in an area. a population’s range, the area it occupies, changes over time. populations, in turn, may form a network, or metapopulation, connected by individuals that move from one group to another. within a population, the distribution of individuals can be random, uniform, or clumped, and the distribution is determined in part by the availability of resources. how might the geographic range of a species change if populations could not exchange individuals with each other? how would your answer depend on what type of metapopulation existed?