1. it can cause excessive sweating and vomiting;

2. it is a major component in acid rain;

3. it can cause severe burns in its gaseous state;

4. accidental inhalation can kill you;

5. it contributes to erosion;

6. it decreases effectiveness of automobile brakes;

7. it has been found in tumors of terminal cancer patients.

Forty-three said yes, six were undecided, and only one knew that the chemical was water. The title of his prize winning project was, "How Gullible Are We?" The conclusion is obvious.