The ground-level ozone is a harmful air pollutant that can be a danger to one's health. It is commonly created by chemical between oxides and nitrogen. Similar to ground-level ozone, smog can also be a danger to one's health, especially to the lungs. It is a mixed smoke and fog.
Answer: I believe that all of those are correct answers.
Explanation:
The largest continent is Asia. It covers 29% of earth's land area. in 2016 alone Asia had 4.436 billion people in it. Asia is 17.21 million mi^2.
China makes a lot of goods and is one of the largest countries for trading and manufacturing goods
US Attractions
Graceland. Graceland is one of the most visited houses in the United States, attracting over 600,000 visitors each year. ...
Pink Palace Museum. ...
Country Music Hall of Fame. ...
Great Smoky Mountains National Park. ...
Montgomery Zoo. ...
Old Alabama Town. ...
The US Space and Rocket Center. ...
Alabama Jazz Hall of Fame.