These pollutants contribute to a variety of health and environmental problems, such as smog, acid rain, nitrogen deposition and visibility impairment.
The pollutants contribute to many health and environment problems, including visibility impairment.
These pollutants don't contribute to any health problems at all.
A lot of people don't vote in primaries for that very reason.
A woman is selling clothes
A white dog lays in the snow
I don't know what you're talking about.
The military personnel are in uniform.
After Darnley was murdered, Mary married the Earl of Bothwell, the main suspect.