HAZWOPER 40 - Lesson 3 - Toxicology
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HAZWOPER 40 - Lesson 3 - Toxicology
HAZWOPER 40 - Lesson 3 - Toxicology **Chemical Interactions** 1. What happens when chemicals are combined? They produce different biological responses than exposure to one chemical alone. **Route of Exposure** 2. What is the most common route of exposure leading to a toxic dose in the work environment? Inhalation **Toxicity** 3. What does an LD 50 of 25 mg/m3 mean? A concentration of 25 mg/m3 of a substance is shown to have been fatal to 50% of a test group of animals. **Fa...