👉 A biological weapon is a type of weapon that uses pathogens, toxins, or other biological agents to inflict harm on humans, animals, or plants. These agents can be naturally occurring or engineered, and they are designed to spread rapidly and cause significant morbidity and mortality. Biological weapons can be delivered through various means, including aerosols, contaminated food or water, or direct contact. Their use is highly regulated under international law, particularly the Biological Weapons Convention, due to their potential for widespread devastation and the difficulty in distinguishing them from naturally occurring diseases.