As a result of WWI, chemical warfare was declared illegal by the international community. True or False?​

Explanation:

Although chemical warfare caused less than 1% of the total deaths in this war, the 'psy-war' or fear factor was formidable. Thus, chemical warfare with gases was subsequently absolutely prohibited by the Geneva Protocol of 1925. It has occasionally been used since then but never in WWI quantities.

true

Explanation:

Geneva Gas Protocol, in full Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or Other Gases, and of Bacteriological Methods of Warfare, in international law, treaty signed in 1925 by most of the world's countries banning the use of chemical and biological weapons in warfare.

chemicals that are toxic to plants