Which of the following effects is due to direct contact with pesticides?

The choice that highlights the effects resulting from direct contact with pesticides is clearly contact effects. This term refers specifically to the immediate response that occurs when a pesticide directly interacts with a living organism, leading to symptoms such as irritation, redness, or chemical burns on the skin or other exposed areas. Contact effects are generally observable shortly after exposure and are of particular concern in situations where an individual handles pesticides without proper protective equipment, leading to acute toxicity.

In contrast, systemic effects refer to reactions that occur when a pesticide is absorbed into the body and affects internal systems, which is not a result of direct contact. Long-term effects are associated with chronic exposure, often resulting from repeated contact over time rather than a single instance of direct exposure. Environmental toxicity pertains to the impact of pesticides on ecosystems and non-target organisms rather than the immediate effects experienced by the individual who comes into contact with the pesticide. Understanding these distinctions is crucial for those handling pesticides to ensure safety and adherence to proper handling protocols.