Silence rolled over the crowd.
The crowd went silent
The crowd cheered
Two people are walking in the snow without shoes.
A man puts on a smile.
A dog by a lake.
In the Figure 20, Projected Marginal Cost of SO2 Reductions ($/Time)
A worker is on the ladder wearing a hard hat and vest while other men work below.
a woman is taking and picture and a man posing for the camera on the platform