Question
Scientists first recognized the potential for harmful effects of CFCs on ozone in the early 1970s. These concerns led to the adoption of the Montreal Protocol in 1987, which bans the production of CFCs, halons and other ozone-depleting chemicals. In the graphic shown, the four globes represent monthly-averaged total ozone over Antarctica for October 1971 and 2015and estimated for 2041 and 2065 respectively. The graph shows each year’s October average minimum ozone (white dots) over Antarctica. The red curve represents a smoothed version of the white dots. According to the model, has the Montreal Protocol been successful in protecting and repairing the ozone layer?
Responses
A No, ozone levels have stabilized, but will never recover. The damage that has been done to the ozone cannot be repaired. No, ozone levels have stabilized, but will never recover. The damage that has been done to the ozone cannot be repaired.
B Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s and the ozone hole is expected to reach pre-1980 levels by around 2075.Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s and the ozone hole is expected to reach pre-1980 levels by around 2075.
C Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s and the ozone hole is expected to reach pre-1980 levels by around 2041.Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s and the ozone hole is expected to reach pre-1980 levels by around 2041.
D Yes, ozone levels stabilized by the mid-1980s and is expected to begin to recover in the mid-2000s. Scientists are hopeful the ozone hole will reach pre-1980 levels one day.
Responses
A No, ozone levels have stabilized, but will never recover. The damage that has been done to the ozone cannot be repaired. No, ozone levels have stabilized, but will never recover. The damage that has been done to the ozone cannot be repaired.
B Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s and the ozone hole is expected to reach pre-1980 levels by around 2075.Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s and the ozone hole is expected to reach pre-1980 levels by around 2075.
C Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s and the ozone hole is expected to reach pre-1980 levels by around 2041.Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s and the ozone hole is expected to reach pre-1980 levels by around 2041.
D Yes, ozone levels stabilized by the mid-1980s and is expected to begin to recover in the mid-2000s. Scientists are hopeful the ozone hole will reach pre-1980 levels one day.
Answers
GPT-4o mini
Based on the information provided regarding the Montreal Protocol and its effects on the ozone layer, the most accurate response would be:
**C**: Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s, and the ozone hole is expected to reach pre-1980 levels by around 2041.
This response aligns with current scientific understanding that the Montreal Protocol has been successful in reducing the production of ozone-depleting substances and that there have been signs of recovery in ozone levels.
**C**: Yes, ozone levels stabilized by the mid-1990s and began to recover in the 2000s, and the ozone hole is expected to reach pre-1980 levels by around 2041.
This response aligns with current scientific understanding that the Montreal Protocol has been successful in reducing the production of ozone-depleting substances and that there have been signs of recovery in ozone levels.