Final answer:
Poisoning by a drug overdose or toxin exposure can have various adverse effects on the body. Carbon monoxide and cyanide interfere with the delivery of oxygen to tissues and cellular respiration. Cyanide poisoning can cause symptoms such as headache, dizziness, and seizures.
Step-by-step explanation:
Poisoning by a drug overdose or toxin exposure can have various adverse effects on the body. Immediate effects can range from death to subtle changes that may appear later on. The damaging effects can occur at different levels within the body, such as organs, cells, or specific biochemicals. For example, carbon monoxide and cyanide interfere with the delivery of oxygen to bodily tissues and cellular respiration. Cyanide poisoning can cause symptoms such as headache, dizziness, and seizures.