Which of the Following Poses the Greatest Potential Threat to Biodiversity

question 27

Multiple Choice

Which of the following poses the greatest potential threat to biodiversity?

• A)replanting after a clear cut, a monoculture of Douglas fir trees on land that consisted of old growth Douglas fir, western cedar, and western hemlock
• B)allowing previously used farmland go fallow and begin to fill in with weeds and then shrubs and saplings
• C)trapping and relocating large predators, such as mountain lions, that pose a threat as they move into areas of relatively dense human populations
• D)importing an Asian insect into the United States to control a weed that competes with staple crops
• E)releasing sterilized rainbow trout to boost the sport fishing of a river system that contains native brook trout