What do you see as the greatest threat to the environment today?

Hi [이름] :)

I really hate pollution, any kind of pollution. I don\'t even know how to stop them. Anyway, I like your answer, thank you for answering your homework.

Teacher Travis.

These days I can see a lot of fine dust easily in the sky.
>>Correct.

>>OR: I can see a lot of fine dust so easily these days.
 It seems that fine dust is occurred from factory in China is coming to Korea by a breeze.
>> It seems that those dust came from all factory in China and it will come to Korea by a breeze.
Just a few years ago I could see the blue sky and Most of the people didn’t wear a mask to avoid the fine dust except for flu.
>>Just few years ago I could see the sky which is blue and most of the people didn’t wear a mask to avoid the fine dust except for flu.
 But one of the developing countries, China is getting bigger than before so they became to have numerous factories for export.
>>But China is one of the developing countries which is getting bigger than before so they became to have numerous factories for export.
 Fine dust is caused as running factories is the greatest threat to the environment in Korea.
>>Correct.

>>OR: Fine dust is caused by running factories is the greatest threat to Korea\'s environment. 
 I didn’t know that how serious it is but I realized people need a clear air after I was transferred to the head quarter in Inchoen near China.
>>Correct.
I recently bought a air purifier to set up at my room.
>>I recently bought an air purifies to apply in my room.
and I heard that the air purifier marking in Korea is expanding rapidly due to surging demand as consumers are becoming more concerned about fine dust.

>>And I heard that the air purifier market in Korea is expanding rapidly due to surging demand as consumers are becoming more concerned about fine dust.