Tremors, nausea, and depression are symptoms most likely to occur by pesticide overexposure to what system in the body?

The symptoms of tremors, nausea, and depression are most closely associated with overexposure to pesticides affecting the nervous system. Pesticides often target the nervous system of pests, and similar effects can manifest in humans as well. Specifically, many pesticides are neurotoxins, meaning they interfere with the normal functioning of nerves and can lead to disturbances in mood and motor control. Tremors can signify neural disruption, while nausea might be a response to the body's distress in trying to cope with toxic substances. Depression can arise from the impact on neurotransmitters and overall brain chemistry due to neurotoxic effects. This aligns with the understanding that the nervous system is particularly vulnerable to chemical exposure, especially from substances meant to disrupt neural function in pests.