Wind? Rivers? Animals crossing borders? Tourists or terrorists? Unmarked black trucks?
There is no country free of pollution as even if it does not pollute itself (eg Antarctica) it is affected by the pollution form other countries.
Almost as many as other countries of the world has. No Difference in the Types of Pollution anywhere in the World.
Many other countries have signed anti-pollution laws and accords, and follow them. The United States has so far not signed, because tightening pollution controls is seen as "bad for business".
Foreign
The same you can find in other parts of the world: air pollution, noise pollution, litter, polluted ground and underground water sources, deforestation. It is not specially high, at least when compared with other countries in the world.
it spreads from one place to another and continue it.
The entire world has pollution problems, and while Australia's do not compare to those of many other countries, they are still an issue.
In my opinion, no but while the U.S does have alot of pollution it's not just us. I mean Mexico is getting pollution from alot of other countries too.
nowhere pollution goes everywhere us humans are very trashy species pollution carries onward you could help the environment by going green!!!
No which is why they are popular in countries where there is a high level of pollution.
China