4.5 billion years ago the earth was a molten ball surrounded by hydrogen and helium.
Twenty years ago, in the early 2000s, people primarily traveled by car, bus, and train for domestic trips. Air travel was also popular, especially for long distances, with budget airlines beginning to emerge. Additionally, many still relied on traditional methods such as bicycles and walking for shorter distances. Overall, travel was less influenced by technology than it is today, with fewer options for ride-sharing and online booking.
Because - hot air is lighter than cold air - and thus it rises.
It does not so there can be no answer to your question.
The density of heated air is less than the density of cooler air.
The air is generally cleaner today compared to 20 years ago due to improved environmental regulations and advancements in technology that have reduced emissions from vehicles and industries. However, air quality can still vary depending on location and local sources of pollution.
it would still be smoggy
The air 1 million years ago was pretty much the same as it is now.
Cleaner air than the jitterbug.
form_title=Central Air Cleaner Repair form_header=7433 Please select why you need servicing.*= [] House seems dustier [] Family member having trouble breathing [] Other When did you last have the filter cleaned?*= () Just had it cleaned () One-three months ago () Four-six months ago () Six-12 months ago () Other () Don't Know Which type of air cleaner are you using?*= () "Electrical attraction () Electrostatic precipitating (""electronic"") () Whole-house electrostatic precipitating () HEPA air cleaner () Clean air cabinet () Other () Don't know"
No, due to the larger extent of industrialisation, automobile exhausts, emissions of umpteen kinds and widespread population, city air is certainly not cleaner than the forest air in the present day.
They don't!
An air cleaner is a device which filters or cleans air, or an air purifier.
It is on the air cleaner lid.It is on the air cleaner lid.
in the air cleaner
No 240sx has a thermostatic air cleaner, only an air filter
4.5 billion years ago the earth was a molten ball surrounded by hydrogen and helium.