i believe the first answer would be right because of the movement.
Hey there!
Increasing ventilation in enclosed spaces would for sure improve indoor air quality.
Keeping pets indoors, using darker paint on all interior walls installing sunscreens in all windows would not help improve indoor air quality.
I hope this helped! :-)
~Gabyngreen
passivation is the answers
Answer:
Air, water, land, climate etc are included in natural physical aspects.
