Biochemical warfare has come a long way since 1915 when it was invented. Biochemical warfare is the deployment of a toxic substance that is designed to kill plants, animal, or even people. It was first used during World War 1. Both sides used these weapons and both sides had a lot of people dead. Today's weapons have become stronger. Now people can use chemical weapons with missile, airplanes, and even grenades. These chemical weapons are normally absorbed through body in a few different ways. One way is through breathing it in. When this happens is and I quote "a chemical travels through the respiratory tract, from the mucosam of the nose and mouth down to the alveoli and begins to damage the lungs". Another way chemicals affect the human body is, they can be absorbed through the eyes. Causing damage this way. Also Chemicals can react to the skin causing a rash and irritating the skin. These particles can even affect the smallest body wounds. Even small cuts from shaving can be affect by these particles. …