Answer the following question given this paragraph: Burning of fossil fuels, such as oil, releases carbon into the atmosphere. This carbon must be cycled - removed from the atmosphere - back into living organisms, or it stays in the atmosphere. Increased carbon in the atmosphere contributes to the greenhouse effect on Earth. Q: Carbon released by burning fossil fuels contributes to what effect in the atmosphere? A:
pick from the following. a. shielding effect. b. smog effect. c. cloud effect. d. greenhouse effect.
Answer:
d.