Which of the following is most responsible for air pollution in the US and Canada? A.
vehicle and industrial emissions
B.
water runoff from farms
C.
mining for minerals
D.
logging and clear-cutting

Please select the best answer from the choices provided
A
B
C
D

How does national geographic allow subjectivity and bias to appear in its video about the flu? a. it uses second-person narration to make the viewer feel guilty for not getting a flu shot. b. it uses the testimonial of a doctor who feels very strongly that all americans should be vaccinated. c. it includes an advertisement for an over-the-counter flu medication. d. it uses onminous music and a blue filter to make the video more frightening.