1.   Air quality is rapidly deteriorating in our cities.

2.   Bad air quality poses a serious threat to public health.

3.   Beds, bedding, noise, light, clocks, temperature, and air quality all make up your sleep environment.

4.   Congress required this to improve air quality in cities whose air violates health standards.

5.   He responded with courage and knocked back the load of special interests trying to weaken efforts to improve air quality.

6.   In water quality and air quality, Texas has the worst record of any big state.

7.   It requires a greater than one-for-one reduction in emissions in order to achieve a net improvement in ambient air quality.

8.   The Acts lay down a minimum standard for air quality, and impose pollution emission controls to particular polluters.