Question
Ozone Depletion
Question 1
The ozone layer in the stratosphere is Earth’s natural sunscreen, shielding life from dangerous ultraviolet radiation and making Earth habitable. Human-produced chemicals in our atmosphere, such as chlorofluorocarbons (CFCs) were used for many years as refrigerants and in aerosol spray cans and have depleted the Earth’s ozone layer. The impact of ozone losses on human health and environment include all of these except:
Responses
A global warmingglobal warming
B increases in sunburns, cataracts, and skin cancersincreases in sunburns, cataracts, and skin cancers
C reduction in crop yields because many plants are sensitive to ultraviolet lightreduction in crop yields because many plants are sensitive to ultraviolet light
D decreases in phytoplankton productivity, including a decrease of 6% to 12% measured around Antarctica
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.
Question 1
The ozone layer in the stratosphere is Earth’s natural sunscreen, shielding life from dangerous ultraviolet radiation and making Earth habitable. Human-produced chemicals in our atmosphere, such as chlorofluorocarbons (CFCs) were used for many years as refrigerants and in aerosol spray cans and have depleted the Earth’s ozone layer. The impact of ozone losses on human health and environment include all of these except:
Responses
A global warmingglobal warming
B increases in sunburns, cataracts, and skin cancersincreases in sunburns, cataracts, and skin cancers
C reduction in crop yields because many plants are sensitive to ultraviolet lightreduction in crop yields because many plants are sensitive to ultraviolet light
D decreases in phytoplankton productivity, including a decrease of 6% to 12% measured around Antarctica
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.
Answers
Answered by
GPT-4o mini
**Question 1: Impact of Ozone Depletion**
The correct response regarding the impact of ozone losses on human health and environment, which does not belong in the list, is:
**A. global warming.**
While ozone depletion is critical to human health and the environment, global warming is primarily associated with greenhouse gases rather than ozone depletion specifically.
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**Question 2: Success of the Montreal Protocol**
The correct response regarding the success of the Montreal Protocol in protecting and repairing the ozone layer is:
**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.**
This reflects scientific consensus that the Montreal Protocol has been effective in reducing the emissions of ozone-depleting substances, leading to a gradual recovery of the ozone layer.
The correct response regarding the impact of ozone losses on human health and environment, which does not belong in the list, is:
**A. global warming.**
While ozone depletion is critical to human health and the environment, global warming is primarily associated with greenhouse gases rather than ozone depletion specifically.
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**Question 2: Success of the Montreal Protocol**
The correct response regarding the success of the Montreal Protocol in protecting and repairing the ozone layer is:
**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.**
This reflects scientific consensus that the Montreal Protocol has been effective in reducing the emissions of ozone-depleting substances, leading to a gradual recovery of the ozone layer.