Very informative and well structured post
You comprehensively explained quite a lot about the Corona Virus. I must admit, I learnt a lot from this but...

Akin to every other country on this list, air pollution dropped significantly due to their efforts to combat COVID-19. Unfortunately, like every other country, their return to day-to-day activities with also restore those levels of pollution.

To dwell on this amidst other areas as an Environmental person, I think amidst the lockdown priority attention should be focused on Waste management as well alongside the focus geared towards the Public health sector. A digressing though...
To the highlighted point..Truly, Air pollution will resurface following the lockdown relax...
Holistically, an adjustment of life is obtainable thanks or no thanks to the pandemic