Asbestos has cases all around the world for people getting sick (death), pet dander is also very very nasty and pollutes the air just as gasoline does.
It’s most likely A, pet dander. If the inside of your house is being polluted by gasoline and asbestos you’ve probably got some serious issues. Hope this helps.
Natural Resource is a source of energy that doesn't need any action from humans. The sun doesn't need the help of humans, therefore it is a natural resource
