【正文】
ame hunting Loss of food species Table Four ways that humans cause population decline and species extinction ?One is that small populations may have breeding problems. ?The second cause is that small populations are much more easily wiped out by random environmental fluctuations Two basic causes for this extinction vortex The smallest population size needed to stay above the extinction vortex is often called the minimum viable population (MVP) Reasons for Decline of Biodiversity Physical Alteration of Habitats The Population Factor Exotic Spec