According to the author, the information published in the US Geological Survey is meant to... 1. ...assure the nation that there is still enough of usable water. 2. ...help to monitor the state of the country’s water resources. 3. ...demonstrate the quality of water the nation uses. 4. ...warn the public about the dangers of water pollution.

Средний уровеньЧисло

According to the author, the information published in the US Geological Survey is meant to... 1.  ...assure the nation that there is still enough of usable water. 2.  ...help to monitor the state of the country’s water resources. 3.  ...demonstrate the quality of water the nation uses. 4.  ...warn the public about the dangers of water pollution.

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