46. What is the term for the process by which nitrogen moves from the atmosphere into living organisms and back into the atmosphere again?
a) Nitrogen cycle
b) Carbon cycle
c) Water cycle
d) None of the above
47. Which of the following is an example of a greenhouse gas?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) None of the above
48. Which of the following is NOT a consequence of climate change?
a) Rising sea levels
b) Increased biodiversity
c) More frequent and severe natural disasters
d) None of the above
49. Which of the following is a primary producer?
a) Deer
b) Grass
c) Wolf
d) None of the above
50. What is the term for the process by which water moves from the atmosphere to the Earth’s surface and back to the atmosphere again?
a) Nitrogen cycle
b) Carbon cycle
c) Water cycle
d) None of the above
