USA HISTORY

Detailed explanation-1: -Biological agents like anthrax, botulinum toxin and plague can pose a difficult public health challenge causing large numbers of deaths in a short amount of time. Biological agents which are capable of secondary transmission can lead to epidemics.

Detailed explanation-2: -Chemical and biological weapons are organisms, toxins, and chemicals used to cause death or harm through their poisonous properties. Alongside nuclear weapons, biological and chemical weapons are weapons of mass destruction because they can kill or injure large numbers of people and cause environmental damage.

Detailed explanation-3: -A weapon of mass destruction is a nuclear, radiological, chemical, biological, or other device that is intended to harm a large number of people. The Department of Homeland Security works every day to prevent terrorists and other threat actors from using these weapons to harm Americans.

Detailed explanation-4: -The military use of chemicals, bacteria, viruses, toxins, or poisons to injure or kill soldiers or civilians is called chemical and biological warfare. The means by which the harmful substances are delivered to the enemy are called chemical and biological weapons.

Detailed explanation-5: -VX is the most potent of all nerve agents. Compared with the nerve agent sarin (also known as GB), VX is considered to be much more toxic by entry through the skin and somewhat more toxic by inhalation.