Consider:
Another name for contamination is pollution. Pollution refers to the presence of harmful or unwanted substances in the environment, typically caused by human activities.
another name is smog pump.this could cause light to come on.
air pollution that travels from one state to another.
Pollution.
it spreads from one place to another and continue it.
Because pollution is clouds, clouds can float from one piece of atmosphere to another...
There are different types of pollutions. The three important types of pollutions are water pollution, land pollution and air pollution.
Pollution doesn't just harm one thing. Pollution harms every living organism in one way or another. Pollution can cause cancer and mutations.
All living creatures are harmed by pollution to one degree or another.
global warming
One type of noise pollution in the neighborhood would include loud music. Another type of noise pollution would be loud cars.
This is generally referred to as pollution.