I think that environmental protection in America is better than iAmerica does a better job with environmental protection than China. I think that America does a better job with environmental protection than China.

I generally try not to use "America", because that seems very ethnocentric and implies that Central American, South America, and Canada, which are also part of America, do not matter. Try to use the US, so we do not offend our neighbors to the north and to the south.

In my opinion, the US has less population and that is also one contributiong factor to the fresh air. In my opinion, the US has less population and that is also one contributing factor to the fresh air.

We add "that" to make it clear that you're referring back to the previous statement, "The US has less population".

In my opinion, the US has lessa smaller population and is also one contribution to thewhich contributes to fresh air. In my opinion, the US has a smaller population which contributes to fresh air.

In China, the places with good air quality are mainly distributed toin the northeast, southeast coastal areas, and southwest plateau areas. In China, the places with good air quality are mainly distributed in the northeast, southeast coastal areas, and southwest plateau areas.

In China, the places with good air quality are mainly distribulocated toin the northeast, southeast coastal areas and southwest plateau areas. In China, the places with good air quality are mainly located in the northeast, southeast coastal areas and southwest plateau areas.

The places with bad air quality are mainly distributed toin the mid-northern and northwest parts of China. The places with bad air quality are mainly distributed in the mid-northern and northwest parts of China.

The places with bad air quality are mainly distributed tofound in the mid-northern and northwest partregions of China. The places with bad air quality are mainly found in the mid-northern and northwest regions of China.

The city with the best air quality is Haikou, andwhereas cities that surrounding Shijiazhuang usually have bad air quality. The city with the best air quality is Haikou, whereas cities that surround Shijiazhuang usually have bad air quality.

As forIn Anhui Province, Huangshan is the city that has the best air quality. is Huangshan. In Anhui Province, the city that has the best air quality is Huangshan.

In short, no matter whether it's in Anhui or China, southern cities in China usually have better air quality than those in the northern part. In short, southern cities in China usually have better air quality than those in the north.