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What is the first step in the general mechanism for electrophilic aromatic substitution?
Ice Block
A large piece of ice, formed either naturally or artificially, often used for cooling or construction in cold environments.
Water Level
The height of the surface of a body of water relative to a specific reference point, often fluctuating due to various factors such as precipitation and evaporation.
Tank
An armored combat vehicle, typically armed with a large caliber cannon and movable on tracks, used in warfare.
Last Glacial Maximum
The period in the Earth's climatic history during the last ice age when ice sheets were at their maximum extent, covering much of North America, Europe, and Asia.
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