Poison gas is any type of noxious gas that is used to harm or kill living things intentionally. Poison gas warfare, sometimes known as chemical warfare, came into wide use during World War I, when mustard gas was used to harm the troops fighting in trenches.Continue Reading
Chemical warfare during World War I used mostly chlorine and phosgene gases released from canisters and spread by the wind. These substances settled in trenches and killed more than 90,000 people throughout the conflict. More than 124,000 ton of poison gas was dispersed. Those who survived a chemical attack suffered ill effects for the rest of their lives.
Modern chemical weapons include deadlier substances and faster methods of delivery. Nerve agents and sarin gas made headlines in the 1980s and 1990s when Iraq used mustard gas on Kurds and Japanese terrorists applied sarin to civilians in a subway attack. Poison gas can be dispersed through missiles, landmines, artillery shells, bombs and spray tanks.
Purdue University lists 85 chemicals as poison gases, more than half of which are noted to be toxic or highly toxic. Exposure to some of the most toxic gases reach poisonous levels at less than one part per million over a 15-minute span. Poison gas should be handled with extreme care and only after specialized training.Learn more about Chemistry
Poison ivy usually has a leaf made of of three shiny, oval, pointed leaflets, while poison oak leaves have lobes, says Dummies.com. The lobes of the poison oak, however, are not as deep as those of many oak trees. One problem with both of these plants is that their appearance can change from season to season or plant to plant, says Missouri Botanical Garden.Full Answer >
Poison oak skin rashes can be identified by contact dermatitis, an itchy, red rash, according to WebMD. It is caused by urushiol, the sticky oil contained in poison oak.Full Answer >
The theme of Roald Dahl's short story "Poison" is racism. The characters in the narrative are Harry Pope, Timber Woods and Dr. Ganderbai.Full Answer >
Poison ivy is not contagious and is not spread through person-to-person contact, according to the Mayo Clinic. The rash itself only occurs as a direct result of contact with the plant or direct contact with plant oils that have contaminated other items, such as clothing.Full Answer >