Background: Unfortunately, the layer of good ozone is being destroyed by air pollution. The chief culprits are chlorine and bromine gases. They are released in aerosol sprays, coolants, and other products. Loss of ozone has created an ozone hole over Antarctica. Ozone depletion results in higher levels of UV radiation reaching Earth. In humans, this increases skin cancers and eye cataracts. It also disturbs the nitrogen cycle, kills plankton, and disrupts ocean food webs. The total loss of the ozone layer would be devastating to most life. It’s rate of loss has slowed with restrictions on pollutants, but it is still at risk.

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had more people using aerosol sprays?
Answer: Earth

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had fewer people using aerosol sprays?
Answer: Mars

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had fewer people using coolants?
Answer: Mars

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had more people using coolants?
Answer: Earth

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had higher levels of UV radiation reaching its surface?
Answer: Earth

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had lower levels of UV radiation reaching its surface?
Answer: Mars

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had more people experiencing skin cancers?
Answer: Earth

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had fewer people experiencing skin cancers?
Answer: Mars

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had fewer people experiencing eye cataracts?
Answer: Mars

Situation: Planet Earth and planet Mars both had breathable atmospheres and were inhabited by humans. People of Earth destroyed the ozone layer, people of mars were more careful and protected it.

Question: Which planet had more people experiencing eye cataracts?
Answer: Earth

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass had its atmosphere destroyed by chlorine gasses?
Answer: Antarctica

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass didn't have its atmosphere destroyed by chlorine gasses?
Answer: Greenland

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass didn't have its atmosphere destroyed by bromine gasses?
Answer: Greenland

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass had its atmosphere destroyed by bromine gasses?
Answer: Antarctica

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass had its atmosphere destroyed by aerosol sprays?
Answer: Antarctica

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass didn't have its atmosphere destroyed by aerosol sprays?
Answer: Greenland

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass didn't have its atmosphere destroyed by coolants?
Answer: Greenland

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass had its atmosphere destroyed by coolants?
Answer: Antarctica

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass had higher levels of UV radiation reaching it?
Answer: Antarctica

Situation: The researches studied the atmosphere in Antarctica, and close to Greenland. They found out there's an ozone hole over Antarctica.

Question: Which landmass had lower levels of UV radiation reaching it?
Answer: Greenland

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent killed more plankton?
Answer: Big

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent killed less plankton?
Answer: Small

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent will experience more devastating consequences because of the loss of ozone layer?
Answer: Big

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent will experience fewer devastating consequences because of the loss of ozone layer?
Answer: Small

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent used more chlorine gasses?
Answer: Big

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent used fewer chlorine gasses?
Answer: Small

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent used fewer bromine gasses?
Answer: Small

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent used more bromine gasses?
Answer: Big

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent used more aerosol sprays?
Answer: Big

Situation: Big continent used more air polluting substances, while Small continent was very protective towards the environment. Big continent got a hole in its ozone layer as a consequence of their actions.

Question: Which continent used fewer aerosol sprays?
Answer: Small

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city caused less acid rain?
Answer: Hop

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city caused more acid rain?
Answer: Bend

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city caused more skin cancers?
Answer: Bend

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city caused fewer skin cancers?
Answer: Hop

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city caused fewer eye cataracts?
Answer: Hop

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city caused more eye cataracts?
Answer: Bend

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city caused the disruption of the nitrogen cycle?
Answer: Bend

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city didn't cause the disruption of the nitrogen cycle?
Answer: Hop

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city disrupted more ocean food webs?
Answer: Bend

Situation: Bend city used a lot of fossil fuels to generate electricity. Hop city, another city from the same county, used only alternative sources of energy.

Question: Which city disrupted fewer ocean food webs?
Answer: Hop

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe experienced more ozone depletion?
Answer: Ana

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe experienced less ozone depletion?
Answer: Momu

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe experienced a higher level of UV radiation?
Answer: Ana

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe experienced a lower level of UV radiation?
Answer: Momu

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe was more exposed to an increased risk of skin cancers?
Answer: Ana

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe was less exposed to an increased risk of skin cancers?
Answer: Momu

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe was less exposed to an increased risk of eye cataracts?
Answer: Momu

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe was more exposed to an increased risk of eye cataracts?
Answer: Ana

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe was more affected by the disruption of ocean food webs?
Answer: Ana

Situation: Two related native tribes live thousands of miles away from each other. Ana tribe lives near the South Pole in Antarctica, while Momu tribe lives in Northern Alaska near the North Pole.

Question: Which tribe was less affected by the disruption of ocean food webs?
Answer: Momu

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet used more chlorine gasses?
Answer: Planet A

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet used fewer chlorine gasses?
Answer: Planet B

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet used fewer bromine gasses?
Answer: Planet B

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet used more bromine gasses?
Answer: Planet A

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet used more aerosols?
Answer: Planet A

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet used fewer aerosols?
Answer: Planet B

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet used fewer coolants?
Answer: Planet B

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet used more coolants?
Answer: Planet A

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet had higher levels of UV reaching it?
Answer: Planet A

Situation: Two neighboring planets identical to Earth in size and atmospheric conditions behaved differently towards their environments. Planet A emitted a lot of air pollution, destroying its ozone layer, while Planet B respected the environment and used ecological products.

Question: Which planet had lower levels of UV reaching it?
Answer: Planet B