Which of the following is least likely to result in speciation?
a) random mating among members of a large population of a species
b) occurrence of hybridization between individuals from two diff erent species
c) development of diff erent mating behavior by some members of a species
d) emigration to a specialized microenvironment by some members of a species
e) formation of a physical barrier that blocks gene fl ow between members of a species

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.