Indicators of recovery of lakes and streams do not show consistent change in response to reduced SO2 emissions.
Indicators of recovery of waterways doesn't show a change when SO2 emissions are reduced.
Indicators of recovery of waterways  show a huge change when SO2 emissions are reduced.
A working person.
A man sits in a ski lounge.
A dog is playing in the park.
The firemen are turning on the water.
A woman carries her purse with her to the concert.
The ice hockey team is huddled up during a break in the game.