1.   But most health hazards cannot be seen by the naked eye.

2.   In closing arguments, prosecutor Maria Armijo said Rico failed to see the hazard of leaving the children in the water.

3.   The agency also said it saw no hazard from ingestion, the eating of crayons.

4.   The Doppler system can see wind hazards that are undetectable by conventional radar, and it can zero in on them.

5.   Treasurer Roland Machold also said he saw no hazards ahead, but as a Wall Street expert, he also knew enough to hedge.