chemical and biological agents

Chemical agents are substances that, when released, can cause harm through toxic or corrosive properties—examples include nerve agents, which disrupt the nervous system, or blister agents that cause skin and eye damage. Biological agents are microorganisms or their toxins, such as viruses, bacteria, or toxins, that can cause disease or death in humans, animals, or plants. Both types of agents are used or mishandled in contexts like warfare or bioterrorism, posing serious health risks. Understanding their nature helps in prevention, detection, and appropriate response to potential exposures.