What effects did the chemical weapon mustard gas have on soldiers? Name at least two. Plz help soon

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It was used on a battlefield near Ypres, Belgium. It attacked the respiratory system of soldiers who were exposed, causing a slow painful death by asphyxiation.

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worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)