Which factor, together with the toxicity of a pesticide, determines its injury potential?

• A. length of exposure
• B. packaging type
• C. color of product
• D. weather conditions

Answer: (A)

Injury potential from a pesticide depends on two things: how toxic the chemical is and how much exposure you have to it. Toxicity tells you how harmful it could be if it gets into or onto the body. But whether harm actually occurs also depends on exposure — how long you’re exposed to the chemical, how often, and through which route. The longer the exposure, the more opportunity there is for absorption and for the dose to accumulate, which raises the risk of injury. So, the length of exposure, combined with toxicity, best explains why a pesticide can cause harm.

Packaging type and color don’t change how poisonous the product is or how long you’re exposed under normal use. Weather conditions can influence exposure in some situations (like drift or evaporation), but the primary factor paired with toxicity in determining injury potential is the length of exposure.