When thermal energy is removed from a [?], its temperature decreases.

substance

conduction

endothermic

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Answered by GPT-5 mini AI
Answer: substance.

Explanation: Removing thermal energy from a substance (matter) reduces the average kinetic energy of its particles, so its temperature falls. "Conduction" is a heat transfer process, and "endothermic" describes a process that absorbs heat, not the object whose temperature decreases.