Final answer:
The subject of this question is Social Studies, specifically geography within Social Studies, as it asks about weather-related killers in the United States.
Step-by-step explanation:
The subject of this question is Social Studies. Social Studies is the study of human society, including its cultures, governments, and geography. In this case, the question is asking about weather-related killers in the United States, which falls under the topic of geography within Social Studies.
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