Chronic toxicity refers to toxicity from

Chronic toxicity refers to toxicity from

• A. Many small exposures to a pesticide
• B. One time exposure to a pesticide
• C. 50% mortality is observed
• D. A nerve poison is formed

Answer: (A)

Chronic toxicity is harm that arises from repeated or long-term exposure to a pesticide, typically at low doses, allowing small amounts to accumulate in the body or environment and cause adverse effects over time. That’s why the best description is many small exposures over time. Acute toxicity, in contrast, comes from a single, high-dose exposure and is often measured by immediate effects or mortality. The idea of a nerve poison being formed isn’t the definition of chronic toxicity, and a 50% mortality measure reflects acute lethality rather than long-term effects.

Chronic toxicity is harm that arises from repeated or long-term exposure to a pesticide, typically at low doses, allowing small amounts to accumulate in the body or environment and cause adverse effects over time. That’s why the best description is many small exposures over time. Acute toxicity, in contrast, comes from a single, high-dose exposure and is often measured by immediate effects or mortality. The idea of a nerve poison being formed isn’t the definition of chronic toxicity, and a 50% mortality measure reflects acute lethality rather than long-term effects.