Which of the following do researchers think is a primary factor in the decrease of North American bird populations?(1 point)

Question

Responses

a.Decreased hunting of predator species

b. Changes in farming practices such as draining wetlands and pesticide use

c. Recreational hunting of bird species such as waterfowl

d. A decrease in conservation efforts

Answer 1

The primary factor in the decrease of North American bird populations that researchers think is changes in farming practices such as draining wetlands and pesticide use. Therefore, the correct answer is b.