Adopting a unified approach to reduce SO2, NOx and mercury is better than looking at each pollutant separately because of synergistic effects.
Since SO2, NOx and mercury potentiate each other, a unified approach to reducing their levels is more accurate than considering them one by one.
Mercury, NOx, and SO2 are best considered in harm reduction by themselves, since they bear no relation to each other.
Microsoft's disastrous neglect of Washington reminded AOL to do the same.
A cat is playing with a ball
Aquatic-sports enthusiasts largely avoid Ibiza because the weather is too unpredictable.
The dog is asleep indoors.
A man is doing a physical activity in pleasant weather.
Three guys jump.