Atmosphere

36. Which of the following is a common greenhouse gas?
a) Carbon monoxide
b) Nitrogen
c) Methane
d) Oxygen

37. Which of the following is not a type of air pollution?
a) Smog
b) Acid rain
c) Ozone depletion
d) Ocean acidification

38. Which of the following is a common source of indoor air pollution?
a) Cars
b) Factories
c) Smoking
d) Forest fires

39. Which of the following is not a component of the Earth’s atmosphere?
a) Nitrogen
b) Oxygen
c) Carbon monoxide
d) Argon

40. What is the name of the process by which carbon dioxide is released into the atmosphere by burning fossil fuels?
a) Respiration
b) Combustion
c) Carbon sequestration
d) Erosion