Search For indicator In Quotes 3

In the rich world the environmental situation has improved dramatically. In the United States the most important environmental indicator particulate air pollution has been cut by more than half since 1955 rivers and coastal waters have dramatically improved and forests are increasing.

Birds are indicators of the environment. If they are in trouble we know we'll soon be in trouble.

Religiosity turns out to be the best indicator of civic involvement: it's more accurate than education age income gender or race.

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Friendship has its illusions no less than love.