Seismic waves is the energy of and earthquake aka Elastic Energy
Wanted to write more both there is a problem with the editor. Uranium is formed naturally in the crust of rocks and seawater. Plutonium does not occur in nature. It is found in the biosphere.
Answer: Lexington and Concord
Explanation: The British were trying to find weapons and could not find them.
If you need to translate, the answer is
Chemical agents concept