How do temperature and water turbidity affect the effectiveness and safety of aquatic pesticides?

• A. Only turbidity affects efficacy; temperature is irrelevant.
• B. Temperature influences pest metabolism and degradation; turbidity affects light penetration and may shield pests; both influence efficacy and exposure risk.
• C. Temperature and turbidity have no impact on efficacy.
• D. Higher turbidity always improves effectiveness.

Answer: (B)