When combining two or more pesticides, the level of toxicity may increase.

When combining two or more pesticides, the level of toxicity may increase.

• A. False
• B. It depends on the specific pesticides
• C. True
• D. There is no effect

Answer: (C)

When pesticides are mixed, their interactions can change how toxic the overall product is. Some combinations produce synergistic effects, where the mixture is more toxic than the sum of the individual pesticides. Others are simply additive, and some can even be less toxic due to antagonism, but the key point is that toxicity can increase in many real-world mixtures. Because these interactions can occur, saying that the level of toxicity may increase is correct.

When pesticides are mixed, their interactions can change how toxic the overall product is. Some combinations produce synergistic effects, where the mixture is more toxic than the sum of the individual pesticides. Others are simply additive, and some can even be less toxic due to antagonism, but the key point is that toxicity can increase in many real-world mixtures. Because these interactions can occur, saying that the level of toxicity may increase is correct.