Prolong feeling of sadness, loss of interests, angry outbursts, tiredness, sleep disturbances, anxiety, loss of appetite, slowed thinking, feeling of worthlessness, frequent/reoccurring of suicidal thoughts, unexplained physical problems and having a hard time thinking. [These are just a few symptoms]
Answer:
Smog.
Explanation:
Hello there!
Here's the definition you were looking for:
smog
<em>noun</em>
1. fog or haze combined with smoke and other atmospheric pollutants.
"exhaust emissions are mainly responsible for the smog"
:)