What caused pollution to decrease during the pandemic?
Оа
More countries are closing down an...
What caused pollution to decrease during the pandemic?
Оа
More countries are closing down and more cleanup efforts are taking place.
Ob
More people are using solar power and more activists are calling for changes.
Ос
Fewer countries are using fossil fuels and fewer people are working.
Od
Fewer people are driving or flying and fewer factories are open.
Answers: 2
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