Endangered Species, Causes Of


 * competition from other species
 * damming of rivers
 * disease
 * drainage and filling of swamps and marshes
 * habitat destruction
 * hunting
 * hybridization with other species and subspecies
 * introduction of exotic species
 * leveling of forests for residential and industrial development
 * limited distribution
 * oil spills
 * overexploitation
 * overharvesting
 * poisoning
 * pollution
 * predation
 * strip mining
 * trapping
 * unregulated killing or illegal killing
 * water pollution